18139905342

Names of 18139905342

• Cardinal: 18139905342 can be written as Eighteen billion, one hundred thirty-nine million, nine hundred five thousand, three hundred forty-two.

Scientific notation

• Scientific notation: 1.8139905342 × 10¹⁰

Factors of 18139905342

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 464

Divisors of 18139905342

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 6 9 13 18 26 27 39 54 73 78 117 146 169 219 234 338 351 373 438 507 657 702 746 949 1014 1119 1314 1521 1898 1971 2238 2847 3042 3357 3942 4563 4849 5329 5694 6714 8541 9126 9698 10071 10658 12337 14547 15987 17082 20142 24674 25623 27229 29094 31974 37011 43641 47961 51246 54458 63037 69277 74022 81687 87282 95922 111033 126074 130923 138554 143883 163374 189111 207831 222066 245061 261846 287766 333099 353977 378222 415662 490122 567333 623493 666198 707954 735183 900601 1061931 1134666 1246986 1470366 1701999 1801202 1870479 1987717 2123862 2701803 3185793 3403998 3740958 3975434 4601701 5403606 5963151 6371586 8105409 9203402 9557379 11926302 13805103 16210818 17889453 19114758 24316227 25840321 27610206 35778906 41415309 48632454 51680642 53668359 77520963 82830618 107336718 124245927 155041926 232562889 248491854 335924173 465125778 671848346 697688667 1007772519 1395377334 2015545038 3023317557 6046635114 9069952671 18139905342
• Sum of all divisors σ(n): 44375055120
• Sum of proper divisors (its aliquot sum) s(n): 26235149778
• 18139905342 is an abundant number, because the sum of its proper divisors (26235149778) is greater than itself. Its abundance is 8095244436

Bases of 18139905342

• Binary: 10000111001001110001111110100111110₂
• Hexadecimal: 0x43938FD3E
• Base-36: 8C014JI

Squares and roots of 18139905342

• 18139905342 squared (18139905342²) is 329056165816720136964
• 18139905342 cubed (18139905342³) is 5969047700116759405432235261688
• The square root of 18139905342 is 134684.4658525993
• The cube root of 18139905342 is 2627.5137989433

Scales and comparisons

• 18,139,905,342 seconds is equal to 576 years, 41 weeks, 1 day, 14 hours, 35 minutes, 42 seconds.
• To count from 1 to 18,139,905,342 would take you about one thousand, one hundred fifty-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 18139905342 cubic inches would be around 219 feet tall.

Recreational maths with 18139905342

• 18139905342 backwards is 24350993181
• The number of decimal digits it has is: 11
• The sum of 18139905342's digits is 45
• More coming soon!