18939538911720

Names of 18939538911720

• Cardinal: 18939538911720 can be written as Eighteen trillion, nine hundred thirty-nine billion, five hundred thirty-eight million, nine hundred eleven thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.893953891172 × 10¹³

Factors of 18939538911720

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 5567

Divisors of 18939538911720

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 29 30 31 35 40 42 49 56 58 60 62 70 84 87 93 98 105 116 120 124 140 145 147 155 168 174 186 196 203 210 217 232 245 248 280 290 294 310 348 372 392 406 420 434 435 465 490 580 588 609 620 651 696 735 744 757 812 840 868 870 899 930 980 1015 1085 1160 1176 1218 1240 1302 1421 1470 1514 1519 1624 1736 1740 1798 1860 1960 2030 2170 2271 2436 2604 2697 2842 2940 3028 3038 3045 3255 3480 3596 3720 3785 4060 4263 4340 4495 4542 4557 4733 4872 5208 5299 5394 5684 5880 6056 6076 6090 6293 6510 7105 7192 7570 7595 8120 8526 8680 8990 9084 9114 9466 10598 10788 11355 11368 12152 12180 12586 13020 13485 14199 14210 15140 15190 15897 17052 17980 18168 18228 18879 18932 21196 21315 21576 21953 22710 22785 23467 23665 24360 25172 26040 26495 26970 28398 28420 30280 30380 31465 31794 33131 34104 35960 36456 37093 37758 37864 42392 42630 43906 44051 45420 45570 46934 47330 50344 52990 53940 56796 56840 60760 62930 63588 65859 66262 70401 70995 74186 75516 79485 85260 87812 88102 90840 91140 93868 94395 94660 99393 105980 107880 109765 111279 113592 117335 125860 127176 131718 132153 132524 137257 140802 141990 146723 148372 151032 153671 158970 164269 165655 170520 175624 176204 182280 185465 187736 188790 189320 198786 211960 219530 220255 222558 231917 234670 251720 263436 264306 265048 274514 281604 283980 293446 296744 307342 317940 328538 329295 331310 352005 352408 370930 377580 397572 411771 439060 440169 440510 445116 461013 463834 469340 492807 496965 526872 528612 549028 556395 563208 567960 586892 614684 635880 657076 658590 660765 662620 680543 686285 695751 704010 733615 741860 755160 768355 795144 821345 823542 878120 880338 881020 890232 922026 927668 938680 960799 985614 993930 1027061 1057224 1075697 1098056 1112790 1149883 1159585 1173784 1229368 1314152 1317180 1321530 1325240 1361086 1372570 1391502 1408020 1467230 1483720 1536710 1642690 1647084 1760676 1762040 1844052 1855336 1921598 1971228 1987860 2041629 2054122 2058855 2151394 2200845 2225580 2299766 2305065 2319170 2464035 2634360 2643060 2722172 2745140 2783004 2816040 2882397 2934460 3073420 3081183 3227091 3285380 3294168 3402715 3449649 3478755 3521352 3582881 3688104 3843196 3942456 3975720 4083258 4108244 4117710 4254967 4302788 4401690 4451160 4599532 4610130 4638340 4763801 4803995 4928070 5135305 5286120 5378485 5444344 5490280 5566008 5749415 5764794 5868920 6146840 6162366 6454182 6570760 6725593 6805430 6899298 6957510 7165762 7189427 7686392 8166516 8216488 8235420 8509934 8605576 8803380 9199064 9220260 9276680 9527602 9607990 9856140 10208145 10270610 10748643 10756970 11498830 11529588 12324732 12764901 12908364 13451186 13610860 13798596 13915020 14291403 14331524 14378854 14411985 15405915 16135455 16333032 16470840 17019868 17248245 17606760 17914405 18440520 19055204 19215980 19712280 20176779 20416290 20541220 21274835 21497286 21513940 21568281 22997660 23059176 23819005 24649464 25080167 25529802 25816728 26902372 27221720 27597192 27830040 28582806 28663048 28757708 28823970 29784769 30811830 32270910 33346607 33627965 34039736 34496490 35828810 35947135 38110408 38431960 40353558 40832580 41082440 42549670 42994572 43027880 43136562 45995320 47638010 50160334 51059604 53743215 53804744 57165612 57515416 57647940 59569538 61623660 63824505 64541820 66693214 67255930 68992980 71457015 71657620 71894270 75240501 80707116 81665160 85099340 85989144 86273124 89354307 95276020 100039821 100320668 100883895 102119208 103903549 107486430 107841405 111069311 114331224 115295880 119139076 123247320 125400835 127649010 129083640 133386428 134511860 137985960 142914030 143315240 143788540 148923845 150481002 161414232 166733035 170198680 172546248 175561169 178708614 190552040 200079642 200641336 201767790 207807098 208493383 214972860 215682810 222138622 238278152 250801670 255298020 266772856 269023720 285828060 287577080 297847690 300962004 311710647 333207933 333466070 351122338 357417228 376202505 400159284 403535580 415614196 416986766 429945720 431365620 444277244 446771535 500199105 501603340 510596040 519517745 526683507 555346555 571656120 595695380 601924008 623421294 625480149 666415866 666932140 702244676 714834456 727324843 752405010 777485177 800318568 807071160 831228392 833973532 862731240 877805845 888554488 893543070 1000398210 1003206680 1039035490 1042466915 1053367014 1110693110 1191390760 1246842588 1250960298 1332831732 1333864280 1404489352 1454649686 1504810020 1554970354 1558553235 1666039665 1667947064 1755611690 1787086140 2000796420 2078070980 2084933830 2106734028 2181974529 2221386220 2332455531 2493685176 2501920596 2633417535 2665663464 2909299372 3009620040 3109940708 3117106470 3127400745 3221010019 3332079330 3511223380 3574172280 3636624215 3887425885 4001592840 4156141960 4169867660 4213468056 4363949058 4442772440 4664911062 5003841192 5091273901 5266835070 5442396239 5818598744 6219881416 6234212940 6254801490 6442020038 6664158660 7022446760 7273248430 7774851770 8339735320 8727898116 9329822124 9663030057 10182547802 10533670140 10884792478 10909872645 11662277655 12468425880 12509602980 12884040076 13328317320 14546496860 15273821703 15549703540 16105050095 16327188717 17455796232 18659644248 19326060114 20365095604 21067340280 21769584956 21819745290 22547070133 23324555310 25019205960 25456369505 25768080152 27211981195 29092993720 30547643406 31099407080 32210100190 32654377434 38652120228 40730191208 43539169912 43639490580 45094140266 46649110620 48315150285 50912739010 54423962390 61095286812 64420200380 65308754868 67641210399 76369108515 77304240456 81635943585 87278981160 90188280532 93298221240 96630300570 101825478020 108847924780 112735350665 122190573624 128840400760 130617509736 135282420798 152738217030 157829490931 163271887170 180376561064 193260601140 203650956040 217695849560 225470701330 270564841596 305476434060 315658981862 326543774340 338206051995 386521202280 450941402660 473488472793 541129683192 610952868120 631317963724 653087548680 676412103990 789147454655 901882805320 946976945586 1262635927448 1352824207980 1578294909310 1893953891172 2367442363965 2705648415960 3156589818620 3787907782344 4734884727930 6313179637240 9469769455860 18939538911720
• Sum of all divisors σ(n): 70688057702400
• Sum of proper divisors (its aliquot sum) s(n): 51748518790680
• 18939538911720 is an abundant number, because the sum of its proper divisors (51748518790680) is greater than itself. Its abundance is 32808979878960

Bases of 18939538911720

• Binary: 100010011100110110100011111010011000111101000₂
• Hexadecimal: 0x1139B47D31E8
• Base-36: 6POPCGOVC

Squares and roots of 18939538911720

• 18939538911720 squared (18939538911720²) is 358706134188556001953358400
• 18939538911720 cubed (18939538911720³) is 6793728786336812226513983745335120448000
• The square root of 18939538911720 is 4351958.0549127539
• The cube root of 18939538911720 is 26655.6821185067

Scales and comparisons

• 18,939,538,911,720 seconds is equal to 602,218 years, 39 weeks, 1 day, 7 hours, 2 minutes.
• To count from 1 to 18,939,538,911,720 would take you about one million, five hundred five thousand, five hundred forty-six 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 18939538911720 cubic inches would be around 2221.3 feet tall.

Recreational maths with 18939538911720

• 18939538911720 backwards is 02711983593981
• The number of decimal digits it has is: 14
• The sum of 18939538911720's digits is 66
• More coming soon!