138523157538

Names of 138523157538

• Cardinal: 138523157538 can be written as One hundred thirty-eight billion, five hundred twenty-three million, one hundred fifty-seven thousand, five hundred thirty-eight.

Scientific notation

• Scientific notation: 1.38523157538 × 10¹¹

Factors of 138523157538

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1068

Divisors of 138523157538

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 6 19 38 57 67 114 134 201 361 402 722 977 1083 1273 1954 2166 2546 2931 3819 5862 7638 18563 24187 37126 48374 55689 65459 72561 111378 130918 145122 196377 352697 392754 705394 954529 1058091 1243721 1909058 2116182 2487442 2863587 3731163 5727174 7462326 18136051 23630699 36272102 47261398 54408153 63953443 70892097 108816306 127906886 141784194 191860329 344584969 383720658 689169938 1033754907 1215115417 2067509814 2430230834 3645346251 7290692502 23087192923 46174385846 69261578769 138523157538
• Sum of all divisors σ(n): 297063304272
• Sum of proper divisors (its aliquot sum) s(n): 158540146734
• 138523157538 is an abundant number, because the sum of its proper divisors (158540146734) is greater than itself. Its abundance is 20016989196

Bases of 138523157538

• Binary: 10000001000000100111111010010000100010₂
• Hexadecimal: 0x20409FA422
• Base-36: 1RMX40F6

Squares and roots of 138523157538

• 138523157538 squared (138523157538²) is 19188665174297566221444
• 138523157538 cubed (138523157538³) is 2658074488883155994183074605844872
• The square root of 138523157538 is 372186.9927039363
• The cube root of 138523157538 is 5174.1711980739

Scales and comparisons

• 138,523,157,538 seconds is equal to 4,404 years, 31 weeks, 4 days, 6 hours, 52 minutes, 18 seconds.
• To count from 1 to 138,523,157,538 would take you about eight thousand, eight hundred nine 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 138523157538 cubic inches would be around 431.2 feet tall.

Recreational maths with 138523157538

• 138523157538 backwards is 835751325831
• The number of decimal digits it has is: 12
• The sum of 138523157538's digits is 51
• More coming soon!