18138311779441581

Names of 18138311779441581

• Cardinal: 18138311779441581 can be written as Eighteen quadrillion, one hundred thirty-eight trillion, three hundred eleven billion, seven hundred seventy-nine million, four hundred forty-one thousand, five hundred eighty-one.

Scientific notation

• Scientific notation: 1.8138311779441581 × 10¹⁶

Factors of 18138311779441581

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 23

Divisors of 18138311779441581

• Number of divisors d(n): 288
• Complete list of divisors:
  1 3 7 9 13 21 27 39 49 63 91 117 147 169 189 273 343 351 441 507 637 819 1029 1183 1323 1521 1911 2197 2401 2457 3087 3549 4459 4563 5733 6591 7203 8281 9261 10647 13377 15379 16807 17199 19773 21609 24843 28561 31213 31941 40131 46137 50421 57967 59319 64827 74529 85683 93639 107653 117649 120393 138411 151263 173901 199927 218491 223587 257049 280917 322959 352947 371293 405769 415233 453789 521703 599781 655473 753571 771147 823543 842751 968877 1058841 1113879 1217307 1399489 1529437 1565109 1799343 1966419 2260713 2470629 2599051 2840383 2906631 3176523 3341637 3651921 4198467 4588311 4826809 5274997 5398029 5899257 6782139 7411887 7797153 8521149 9796423 10024911 10706059 10955763 12595401 13764933 14480427 15824991 18193357 19882681 20346417 22235661 23391459 25563447 29389269 32118177 33787663 36924979 37786203 41294799 43441281 47474973 54580071 59648043 62748517 68574961 70174377 76690341 88167807 96354531 101362989 110774937 127353499 130323843 139178767 142424919 163740213 178944129 188245551 205724883 236513641 258474853 264503421 289063593 304088967 332324811 382060497 417536301 439239619 480024727 491220639 536832387 564736653 617174649 709540923 775424559 815730721 891474493 912266901 996974433 1146181491 1252608903 1317718857 1440074181 1655595487 1694209959 1809323971 1851523947 2128622769 2326273677 2447192163 2674423479 3074677333 3360173089 3438544473 3757826709 3953156571 4320222543 4966786461 5427971913 5710115047 6240321451 6385868307 6978821031 7341576489 8023270437 9224031999 10080519267 11589168409 11859469713 12960667629 14900359383 16283915739 17130345141 18720964353 21522741331 22024729467 23521211623 24069811311 27672095997 30241557801 34767505227 39970805329 43682250157 44701078149 48851747217 51391035423 56162893059 64568223993 70563634869 81124178863 83016287991 90724673403 104302515681 119912415987 131046750471 150659189317 154173106269 168488679177 193704671979 211690904607 243372536589 279795637303 305775751099 312907547043 359737247961 393140251413 451977567951 567869252041 581114015937 635072713821 730117609767 839386911909 917327253297 1054614325219 1079211743883 1179420754239 1355932703853 1703607756123 1958569461121 2190352829301 2518160735727 2751981759891 3163842975657 3975084764287 4067798111559 5110823268369 5875708383363 7382300276533 7554482207181 8255945279673 9491528926971 11925254292861 13709986227847 15332469805107 17627125150089 22146900829599 28474586780913 35775762878583 41129958683541 51676101935731 52881375450267 66440702488797 95969903594929 107327288635749 123389876050623 155028305807193 199322107466391 287909710784787 370169628151869 465084917421579 671789325164503 863729132354361 1395254752264737 2015367975493509 2591187397063083 6046103926480527 18138311779441581
• Sum of all divisors σ(n): 33962676655392000
• Sum of proper divisors (its aliquot sum) s(n): 15824364875950419
• 18138311779441581 is a deficient number, because the sum of its proper divisors (15824364875950419) is less than itself. Its deficiency is 2313946903491162

Bases of 18138311779441581

• Binary: 1000000011100001011001011001110011100000101101110101101₂
• Hexadecimal: 0x4070B2CE705BAD
• Base-36: 4YLHTEC5B59

Squares and roots of 18138311779441581

• 18138311779441581 squared (18138311779441581²) is 328998354208229212548560191779561
• 18138311779441581 cubed (18138311779441581³) is 5967474723552017566951067999952116015795229325941
• The square root of 18138311779441581 is 134678549.8119191251
• The cube root of 18138311779441581 is 262743.6855685757

Scales and comparisons

• 18,138,311,779,441,581 seconds is equal to 576,742,209 years, 5 weeks, 2 days, 21 hours, 46 minutes, 21 seconds.
• To count from 1 to 18,138,311,779,441,581 would take you about one billion, seven hundred thirty million, two hundred twenty-six thousand, six hundred twenty-seven 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 18138311779441581 cubic inches would be around 21895.3 feet tall.

Recreational maths with 18138311779441581

• 18138311779441581 backwards is 18514497711383181
• The number of decimal digits it has is: 17
• The sum of 18138311779441581's digits is 72
• More coming soon!