138442486581

Names of 138442486581

• Cardinal: 138442486581 can be written as One hundred thirty-eight billion, four hundred forty-two million, four hundred eighty-six thousand, five hundred eighty-one.

Scientific notation

• Scientific notation: 1.38442486581 × 10¹¹

Factors of 138442486581

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 112

Divisors of 138442486581

• Number of divisors d(n): 180
• Complete list of divisors:
  1 3 7 9 21 23 27 49 63 69 79 81 147 161 189 207 237 243 441 483 553 567 621 711 729 1127 1323 1449 1659 1701 1817 1863 2133 2187 3381 3871 3969 4347 4977 5103 5451 5589 6241 6399 6561 10143 11613 11907 12719 13041 14931 15309 16353 16767 18723 19197 19683 30429 34839 35721 38157 39123 43687 44793 45927 49059 50301 56169 57591 89033 91287 104517 107163 114471 117369 131061 134379 137781 143543 147177 150903 168507 172773 267099 273861 305809 313551 321489 343413 352107 393183 403137 430629 441531 452709 505521 518319 801297 821583 917427 940653 964467 1004801 1030239 1056321 1179549 1209411 1291887 1324593 1516563 1554957 2403891 2464749 2752281 2821959 3014403 3090717 3168963 3538647 3628233 3875661 3973779 4549689 7033607 7211673 7394247 8256843 8465877 9043209 9272151 10615941 10884699 11626983 11921337 13649067 21100821 21635019 22182741 24770529 25397631 27129627 27816453 31847823 34880949 35764011 40947201 63302463 64905057 74311587 76192893 81388881 83449359 95543469 104642847 122841603 189907389 194715171 222934761 244166643 250348077 286630407 313928541 569722167 584145513 668804283 732499929 859891221 941785623 1709166501 1752436539 2006412849 2197499787 2825356869 5127499503 6019238547 6592499361 15382498509 19777498083 46147495527 138442486581
• Sum of all divisors σ(n): 255297807072
• Sum of proper divisors (its aliquot sum) s(n): 116855320491
• 138442486581 is a deficient number, because the sum of its proper divisors (116855320491) is less than itself. Its deficiency is 21587166090

Bases of 138442486581

• Binary: 10000000111011110100001011001100110101₂
• Hexadecimal: 0x203BD0B335
• Base-36: 1RLL2YB9

Squares and roots of 138442486581

• 138442486581 squared (138442486581²) is 19166322090730365069561
• 138442486581 cubed (138442486581³) is 2653433288853062430631929874060941
• The square root of 138442486581 is 372078.6026916893
• The cube root of 138442486581 is 5173.1665853117

Scales and comparisons

• 138,442,486,581 seconds is equal to 4,402 years, 2 weeks, 1 day, 14 hours, 16 minutes, 21 seconds.
• To count from 1 to 138,442,486,581 would take you about eight thousand, eight hundred four 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 138442486581 cubic inches would be around 431.1 feet tall.

Recreational maths with 138442486581

• 138442486581 backwards is 185684244831
• The number of decimal digits it has is: 12
• The sum of 138442486581's digits is 54
• More coming soon!