18918981329220

Names of 18918981329220

• Cardinal: 18918981329220 can be written as Eighteen trillion, nine hundred eighteen billion, nine hundred eighty-one million, three hundred twenty-nine thousand, two hundred twenty.

Scientific notation

• Scientific notation: 1.891898132922 × 10¹³

Factors of 18918981329220

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 2917

Divisors of 18918981329220

• Number of divisors d(n): 864
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 14 15 17 18 20 21 28 30 34 35 36 42 45 49 51 60 63 67 68 70 84 85 90 98 102 105 119 126 134 140 147 153 170 180 196 201 204 210 238 245 252 255 268 294 306 315 335 340 357 402 420 441 469 476 490 510 588 595 603 612 630 670 714 735 765 804 833 882 938 980 1005 1020 1071 1093 1139 1190 1206 1260 1340 1407 1428 1470 1530 1666 1723 1764 1785 1876 2010 2142 2186 2205 2278 2345 2380 2412 2499 2814 2940 3015 3060 3279 3283 3332 3417 3446 3570 4020 4165 4221 4284 4372 4410 4556 4690 4998 5169 5355 5465 5628 5695 6030 6558 6566 6834 6892 7035 7140 7497 7651 7973 8330 8442 8615 8820 9380 9837 9849 9996 10251 10338 10710 10930 11390 12060 12061 12495 13116 13132 13668 14070 14994 15302 15507 15946 16395 16415 16660 16884 17085 17230 18581 19674 19698 20502 20676 21105 21420 21860 22780 22953 23919 24122 24990 25845 28140 29291 29547 29988 30604 31014 31892 32790 32830 34170 34460 36183 37162 37485 38255 39348 39396 39865 41004 42210 45906 47838 48244 49185 49245 49980 51255 51690 53557 55743 55811 58582 59094 60305 62028 65580 65660 68340 68859 71757 72366 73231 74324 74970 76510 77535 79730 84420 84427 87873 91812 92905 95676 98370 98490 102510 103380 107114 108549 111486 111622 114765 115441 117164 118188 119595 120610 130067 137718 143514 144732 146455 146462 147735 149940 153020 155070 159460 160671 167229 167433 168854 175746 180915 185810 196740 196980 205020 205037 214228 217098 219693 222972 223244 229530 230882 239190 241220 253281 260134 263619 267785 275436 278715 279055 287028 292910 292924 295470 310140 321342 334458 334866 337708 344295 346323 351492 358785 361830 366155 371620 390201 410074 422135 434196 439365 439386 459060 461764 478380 482013 502299 506562 512617 520268 527238 535570 542745 557430 558110 577205 585820 590940 615111 642684 650335 659079 668916 669732 688590 692646 717570 723660 732310 759843 780402 803355 808087 820148 836145 837165 844270 878730 878772 910469 964026 1004598 1013124 1025185 1025234 1038969 1054476 1071140 1085490 1098465 1114860 1116220 1154410 1170603 1230222 1244927 1266405 1300670 1318095 1318158 1377180 1385292 1435140 1435259 1464620 1519686 1537851 1560804 1606710 1616174 1672290 1674330 1688540 1731615 1757460 1820938 1845333 1883239 1928052 1951005 1962497 2009196 2050370 2050468 2077938 2170980 2196930 2308820 2341206 2410065 2424261 2460444 2489854 2511495 2532810 2563085 2601340 2636190 2636316 2731407 2870518 3039372 3075555 3075702 3213420 3232348 3295395 3344580 3348660 3463230 3588319 3641876 3690666 3734781 3766478 3799215 3902010 3924994 4040435 4100740 4155876 4305777 4393860 4552345 4613553 4682412 4820130 4848522 4979708 5022990 5065620 5126170 5194845 5272380 5462814 5649717 5656609 5741036 5853015 5887491 6151110 6151404 6224635 6590790 6926460 7176295 7176638 7272783 7381332 7469562 7532956 7598430 7689255 7804020 7849988 8080870 8194221 8611554 8714489 9104690 9226665 9227106 9416195 9640260 9697044 9812485 10045980 10252340 10389690 10764957 10925628 11204343 11299434 11313218 11706030 11774982 12121305 12302220 12449270 12917331 13181580 13182673 13657035 13737479 14352590 14353276 14545566 14939124 15196860 15378510 16161740 16388442 16949151 16969827 17223108 17428978 17662473 17941595 18209380 18453330 18454212 18673905 18832390 19624970 20779380 21528885 21529914 22408686 22598868 22626436 23067765 23412060 23549964 24242610 24898540 25834662 26143467 26365346 27314070 27474958 28248585 28283045 28705180 29091132 29437455 30757020 32015063 32294871 32776884 33898302 33939654 34857956 35324946 35883190 36363915 36906660 37347810 37664780 39249940 39548019 40971105 41212437 43057770 43059828 43572445 44817372 46135530 48485220 50909481 51669324 52286934 52730692 53824785 54628140 54949916 56021715 56497170 56566090 58874910 61001423 64030126 64586655 64589742 65913365 67796604 67879308 68687395 70649892 71766380 72727830 74695620 78430401 79096038 81942210 82424874 84745755 84849135 86115540 87144890 88312365 92271060 92278711 96045189 96162353 101818962 104573868 107649570 112043430 112994340 113132180 117749820 118644057 122002846 123637311 126177013 128060252 129173310 129179484 130717335 131826730 137374790 145455660 156860802 158192076 160075315 161474355 163884420 164849748 169491510 169698270 174289780 176624730 183004269 184557422 192090378 192324706 197740095 203637924 206062185 215299140 224086860 224105441 237288114 244005692 247274622 252354026 254547405 258346620 261434670 263653460 274749580 276836133 288135567 288487059 305007115 313721604 320150630 322948710 338983020 339396540 353249460 366008538 369114844 378531039 384180756 384649412 392152005 395480190 412124370 448210882 461393555 474576228 480225945 480811765 494549244 504708052 509094810 522869340 549012807 553672266 576271134 576974118 593220285 610014230 618186555 630885065 640301260 645897420 672316323 732017076 757062078 784304010 790960380 824248740 830508399 865461177 883239091 896421764 915021345 922787110 960451890 961623530 1018189620 1098025614 1107344532 1120527205 1135593117 1152542268 1153948236 1186440570 1220028460 1236373110 1261770130 1344632646 1384180665 1440677835 1442435295 1514124156 1568608020 1568738087 1661016798 1730922354 1766478182 1830042690 1845574220 1892655195 1920903780 1923247060 2016948969 2145009221 2196051228 2241054410 2271186234 2372881140 2472746220 2523540260 2649717273 2689265292 2745064035 2768361330 2881355670 2884870590 3137476174 3322033596 3361581615 3461844708 3532956364 3660085380 3785310390 4033897938 4152541995 4290018442 4327305885 4416195455 4482108820 4542372468 4706214261 5299434546 5490128070 5536722660 5677965585 5762711340 5769741180 6182673637 6274952348 6435027663 6723163230 7570620780 7843690435 7949151819 8067795876 8305083990 8580036884 8654611770 8832390910 9412428522 10084744845 10598869092 10725046105 10980256140 11355931170 12365347274 12870055326 13248586365 13446326460 14118642783 15015064547 15687380870 15898303638 16610167980 17309223540 17664781820 18548020911 18824857044 19305082989 20169489690 21450092210 22711862340 23531071305 24730694548 25740110652 26497172730 28237285566 30030129094 30913368185 31374761740 31796607276 32175138315 37096041822 38610165978 39745759095 40338979380 42900184420 45045193641 47062142610 52994345460 55644062733 56474571132 60060258188 61826736370 64350276630 70593213915 74192083644 75075322735 77220331956 79491518190 90090387282 92740104555 94124285220 96525414945 105105451829 111288125466 123653472740 128700553260 135135580923 141186427830 150150645470 158983036380 180180774564 185480209110 193050829890 210210903658 222576250932 225225968205 270271161846 278220313665 282372855660 300301290940 315316355487 370960418220 386101659780 420421807316 450451936410 525527259145 540542323692 556440627330 630632710974 675677904615 900903872820 945949066461 1051054518290 1112881254660 1261265421948 1351355809230 1576581777435 1891898132922 2102109036580 2702711618460 3153163554870 3783796265844 4729745332305 6306327109740 9459490664610 18918981329220
• Sum of all divisors σ(n): 71846149834368
• Sum of proper divisors (its aliquot sum) s(n): 52927168505148
• 18918981329220 is an abundant number, because the sum of its proper divisors (52927168505148) is greater than itself. Its abundance is 34008187175928

Bases of 18918981329220

• Binary: 100010011010011101011001010010110000101000100₂
• Hexadecimal: 0x1134EB296144
• Base-36: 6PF9D0CP0

Squares and roots of 18918981329220

• 18918981329220 squared (18918981329220²) is 357927854535374958025808400
• 18918981329220 cubed (18918981329220³) is 6771630397162530928902210310497041448000
• The square root of 18918981329220 is 4349595.5362792067
• The cube root of 18918981329220 is 26646.0343164463

Scales and comparisons

• 18,918,981,329,220 seconds is equal to 601,565 years, 4 weeks, 3 days, 7 hours, 27 minutes.
• To count from 1 to 18,918,981,329,220 would take you about one million, five hundred three thousand, nine hundred twelve years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 18918981329220 cubic inches would be around 2220.5 feet tall.

Recreational maths with 18918981329220

• 18918981329220 backwards is 02292318981981
• 18918981329220 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 18918981329220's digits is 63
• More coming soon!