18218990089872

Names of 18218990089872

• Cardinal: 18218990089872 can be written as Eighteen trillion, two hundred eighteen billion, nine hundred ninety million, eighty-nine thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 1.8218990089872 × 10¹³

Factors of 18218990089872

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 462

Divisors of 18218990089872

• Number of divisors d(n): 720
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 13 16 18 22 24 26 27 33 36 39 44 48 52 54 66 72 78 88 99 104 108 117 121 132 143 144 156 169 176 198 208 216 234 242 264 286 297 312 338 351 363 396 429 432 433 468 484 507 528 572 594 624 676 702 726 792 858 866 936 968 1014 1089 1144 1188 1287 1299 1331 1352 1404 1452 1521 1573 1584 1716 1732 1859 1872 1936 2028 2178 2288 2376 2574 2598 2662 2704 2808 2904 3042 3146 3267 3432 3464 3718 3861 3897 3993 4056 4356 4563 4719 4752 4763 5148 5196 5324 5577 5616 5629 5808 6084 6292 6534 6864 6928 7436 7722 7794 7986 8112 8712 9126 9438 9526 10296 10392 10648 11154 11258 11691 11979 12168 12584 13068 14157 14289 14872 15444 15588 15972 16731 16887 17303 17424 18252 18876 19052 20449 20592 20784 21296 22308 22516 23382 23958 24336 25168 26136 28314 28578 29744 30888 31176 31944 33462 33774 34606 35937 36504 37752 38104 40898 42471 42867 44616 45032 46764 47916 50193 50661 51909 52272 52393 56628 57156 61347 61776 61919 62352 63888 66924 67548 69212 71874 73008 73177 75504 76208 81796 84942 85734 89232 90064 93528 95832 100386 101322 103818 104786 113256 114312 122694 123838 128601 133848 135096 138424 143748 146354 151983 155727 157179 163592 169884 171468 184041 185757 187056 187489 191664 200772 202644 207636 209572 219531 224939 226512 228624 245388 247676 257202 267696 270192 276848 287496 292708 303966 311454 314358 327184 339768 342936 368082 371514 374978 401544 405288 415272 419144 439062 449878 467181 471537 490776 495352 514404 552123 557271 562467 574992 576323 585416 607932 622908 628716 658593 674817 679536 681109 685872 736164 743028 749956 803088 804947 810576 830544 838288 878124 899756 934362 943074 981552 990704 1028808 1104246 1114542 1124934 1152646 1170832 1215864 1245816 1257432 1317186 1349634 1362218 1414611 1472328 1486056 1499912 1609894 1671813 1687401 1728969 1756248 1799512 1868724 1886148 1975779 2024451 2043327 2057616 2062379 2208492 2229084 2249868 2305292 2414841 2431728 2437357 2491632 2514864 2634372 2699268 2724436 2829222 2944656 2972112 2999824 3219788 3343626 3374802 3457938 3512496 3599024 3737448 3772296 3951558 4048902 4086654 4124758 4416984 4458168 4499736 4610584 4829682 4874714 5062203 5186907 5268744 5398536 5448872 5658444 6073353 6129981 6187137 6439576 6687252 6749604 6915876 7244523 7312071 7474896 7492199 7544592 7903116 8097804 8173308 8249516 8833968 8854417 8916336 8999472 9221168 9659364 9749428 10124406 10373814 10537488 10797072 10897744 11316888 12146706 12259962 12374274 12879152 13374504 13499208 13831752 14489046 14624142 14984398 15560721 15806232 16195608 16346616 16499032 17708834 18389943 18561411 19318728 19498856 20248812 20747628 21733569 21936213 22476597 22633776 22686169 24293412 24519924 24748548 26563251 26749008 26810927 26998416 27663504 28978092 29248284 29968796 31121442 31612464 31685641 32391216 32693232 32998064 35417668 36779886 37122822 38637456 38997712 40497624 41495256 43467138 43872426 44953194 45372338 48586824 49039848 49497096 53126502 53621854 55684233 57956184 58496568 59937592 62242884 63371282 65808639 67429791 68058507 70835336 73559772 74245644 79689753 80432781 80995248 82990512 86934276 87744852 89906388 90744676 95056923 97173648 97398587 98079696 98994192 106253004 107243708 111368466 115912368 116993136 119875184 124485768 126742564 131617278 134859582 136117014 141670672 147119544 148491288 159379506 160865562 173868552 175489704 179812776 181489352 190113846 194797174 202289373 204175521 212506008 214487416 222736932 239069259 241298343 248971536 249547859 253485128 263234556 269719164 272234028 285170769 292195761 294239088 294920197 296982576 318759012 321731124 347737104 348542051 350979408 359625552 362978704 380227692 389594348 404578746 408351042 425012016 428974832 445473864 478138518 482596686 499095718 506970256 526469112 539438328 544468056 570341538 584391522 589840394 612526563 637518024 643462248 697084102 723895029 748643577 760455384 779188696 809157492 816702084 855512307 876587283 884760591 890947728 956277036 965193372 998191436 1045626153 1052938224 1078876656 1088936112 1140683076 1168783044 1179680788 1225053126 1275036048 1286924496 1394168204 1447790058 1497287154 1520910768 1558377392 1618314984 1633404168 1711024614 1753174566 1769521182 1912554072 1930386744 1996382872 2091252306 2245930731 2281366152 2337566088 2359361576 2450106252 2629761849 2654281773 2788336408 2895580116 2994574308 3136878459 3236629968 3244122167 3266808336 3422049228 3506349132 3539042364 3825108144 3833962561 3860773488 3992765744 4182504612 4491861462 4562732304 4675132176 4718723152 4900212504 5259523698 5308563546 5576672816 5791160232 5989148616 6273756918 6488244334 6737792193 6844098456 7012698264 7078084728 7667925122 7962845319 8365009224 8983722924 9410635377 9732366501 9800425008 10519047396 10617127092 11501887683 11582320464 11978297232 12547513836 12976488668 13475584386 13688196912 14025396528 14156169456 15335850244 15925690638 16730018448 17967445848 18821270754 19464733002 21038094792 21234254184 23003775366 25095027672 25952977336 26951168772 29197099503 30671700488 31851381276 34505663049 35934891696 37642541508 38929466004 42076189584 42173588171 42468508368 46007550732 50190055344 51905954672 53902337544 58394199006 61343400976 63702762552 69011326098 75285083016 77858932008 84347176342 87591298509 92015101464 103516989147 107804675088 116788398012 126520764513 127405525104 138022652196 150570166032 155717864016 168694352684 175182597018 184030202928 207033978294 233576796024 253041529026 276045304392 337388705368 350365194036 379562293539 414067956588 467153592048 506083058052 552090608784 674777410736 700730388072 759124587078 828135913176 1012166116104 1138686880617 1401460776144 1518249174156 1656271826352 2024332232208 2277373761234 3036498348312 4554747522468 6072996696624 9109495044936 18218990089872
• Sum of all divisors σ(n): 62430065202240
• Sum of proper divisors (its aliquot sum) s(n): 44211075112368
• 18218990089872 is an abundant number, because the sum of its proper divisors (44211075112368) is greater than itself. Its abundance is 25992085022496

Bases of 18218990089872

• Binary: 100001001000111110000011011101011011010010000₂
• Hexadecimal: 0x1091F06EB690
• Base-36: 6GHOSARO0

Squares and roots of 18218990089872

• 18218990089872 squared (18218990089872²) is 331931599894854146636976384
• 18218990089872 cubed (18218990089872³) is 6047458528999705494787938236890501582848
• The square root of 18218990089872 is 4268370.8941318583
• The cube root of 18218990089872 is 26313.2666371967

Scales and comparisons

• 18,218,990,089,872 seconds is equal to 579,307 years, 27 weeks, 3 days, 20 hours, 31 minutes, 12 seconds.
• To count from 1 to 18,218,990,089,872 would take you about one million, four hundred forty-eight thousand, two hundred sixty-eight 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 18218990089872 cubic inches would be around 2192.8 feet tall.

Recreational maths with 18218990089872

• 18218990089872 backwards is 27898009981281
• 18218990089872 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 18218990089872's digits is 72
• More coming soon!