18351890781994

Names of 18351890781994

• Cardinal: 18351890781994 can be written as Eighteen trillion, three hundred fifty-one billion, eight hundred ninety million, seven hundred eighty-one thousand, nine hundred ninety-four.

Scientific notation

• Scientific notation: 1.8351890781994 × 10¹³

Factors of 18351890781994

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 76

Divisors of 18351890781994

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 7 11 14 19 22 37 38 49 74 77 98 133 154 209 259 266 343 361 407 418 518 539 686 703 722 814 931 1078 1369 1406 1463 1813 1862 2401 2527 2738 2849 2926 3626 3773 3971 4802 4921 5054 5698 6517 6859 7546 7733 7942 9583 9842 10241 12691 13034 13357 13718 15059 15466 17689 19166 19943 20482 25382 26011 26411 26714 27797 30118 34447 35378 39886 45619 48013 50653 52022 52822 54131 55594 67081 68894 71687 75449 88837 91238 93499 96026 101306 105413 108262 123823 134162 139601 143374 146927 150898 177674 182077 186998 194579 210826 241129 247646 253783 279202 286121 293854 336091 354571 364154 378917 389158 469567 482258 494209 501809 507566 528143 557183 572242 654493 672182 709142 737891 757834 866761 939134 962407 977207 988418 1003618 1028489 1056286 1114366 1274539 1308986 1362053 1475782 1687903 1733522 1776481 1924814 1954414 2002847 2056978 2352637 2481997 2549078 2652419 2724106 2791613 3286969 3375806 3459463 3552962 3697001 3900281 4005694 4581451 4705274 4963994 5165237 5304838 5436299 5583226 6573938 6736849 6918926 7199423 7394002 7800562 8921773 9162902 9389971 9534371 10330474 10586477 10872598 12435367 13473698 14019929 14398846 16468459 17373979 17843546 18285733 18566933 18779942 19068742 19541291 21172954 24216241 24870734 25879007 27301967 28039858 32070157 32936918 34747958 36156659 36571466 37133866 38054093 39082582 47157943 48432482 50395961 51758014 54603934 62452411 64140314 65729797 72313318 74105339 76108186 87047569 94315886 98139503 100791922 103289681 121617853 124904822 128000131 131459594 136789037 148210678 169513687 174095138 181153049 191113769 196279006 201143063 206579362 243235706 256000262 266378651 273578074 330105601 339027374 347428927 352771727 362306098 382227538 402286126 460108579 518737373 532757302 609332983 660211202 686976521 694857854 705543454 723027767 896000917 920217158 957523259 1037474746 1186595809 1218665966 1337796383 1373953042 1408001441 1446055534 1792001834 1864650557 1915046518 2310739207 2373191618 2432002489 2675592766 2816002882 3220760053 3631161611 3729301114 3821718197 4621478414 4864004978 5061194369 6272006419 6441520106 6702662813 7262323222 7643436394 9856010087 10122388738 12544012838 13052553899 13405325626 17024017423 19712020174 22545320371 25418131277 26105107798 26752027379 34048034846 35428360583 43904044933 45090640742 50836262554 53504054758 68992070609 70856721166 87808089866 119168121961 137984141218 187264191653 238336243922 247998524081 374528383306 482944494263 495997048162 834176853727 965888988526 1310849341571 1668353707454 2621698683142 9175945390997 18351890781994
• Sum of all divisors σ(n): 38006540438400
• Sum of proper divisors (its aliquot sum) s(n): 19654649656406
• 18351890781994 is an abundant number, because the sum of its proper divisors (19654649656406) is greater than itself. Its abundance is 1302758874412

Bases of 18351890781994

• Binary: 100001011000011100001111011100101011100101010₂
• Hexadecimal: 0x10B0E1EE572A
• Base-36: 6I6QPXU0A

Squares and roots of 18351890781994

• 18351890781994 squared (18351890781994²) is 336791895274236348834616036
• 18351890781994 cubed (18351890781994³) is 6180768078333546660895681055484772455784
• The square root of 18351890781994 is 4283910.6879105217
• The cube root of 18351890781994 is 26377.0934903605

Scales and comparisons

• 18,351,890,781,994 seconds is equal to 583,533 years, 18 weeks, 5 days, 7 hours, 26 minutes, 34 seconds.
• To count from 1 to 18,351,890,781,994 would take you about one million, four hundred fifty-eight thousand, eight hundred thirty-three 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 18351890781994 cubic inches would be around 2198.1 feet tall.

Recreational maths with 18351890781994

• 18351890781994 backwards is 49918709815381
• The number of decimal digits it has is: 14
• The sum of 18351890781994's digits is 73
• More coming soon!