138161940644

Names of 138161940644

• Cardinal: 138161940644 can be written as One hundred thirty-eight billion, one hundred sixty-one million, nine hundred forty thousand, six hundred forty-four.

Scientific notation

• Scientific notation: 1.38161940644 × 10¹¹

Factors of 138161940644

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 210214

Divisors of 138161940644

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 7 13 14 26 28 52 91 139 169 182 278 338 364 556 676 973 1183 1807 1946 2366 3614 3892 4732 7228 12649 23491 25298 46982 50596 93964 164437 210053 328874 420106 657748 840212 1470371 2730689 2940742 5461378 5881484 10922756 19114823 29197367 35498957 38229646 58394734 70997914 76459292 116789468 141995828 204381569 248492699 379565771 408763138 496985398 759131542 817526276 993970796 1518263084 2656960397 4934355023 5313920794 9868710046 10627841588 19737420092 34540485161 69080970322 138161940644
• Sum of all divisors σ(n): 301368674880
• Sum of proper divisors (its aliquot sum) s(n): 163206734236
• 138161940644 is an abundant number, because the sum of its proper divisors (163206734236) is greater than itself. Its abundance is 25044793592

Bases of 138161940644

• Binary: 10000000101011000101111110100010100100₂
• Hexadecimal: 0x202B17E8A4
• Base-36: 1RGY1VOK

Squares and roots of 138161940644

• 138161940644 squared (138161940644²) is 19088721842516179134736
• 138161940644 cubed (138161940644³) is 2637334854175546657223066510609984
• The square root of 138161940644 is 371701.4132929819
• The cube root of 138161940644 is 5169.6698449171

Scales and comparisons

• 138,161,940,644 seconds is equal to 4,393 years, 6 weeks, 2 days, 12 hours, 50 minutes, 44 seconds.
• To count from 1 to 138,161,940,644 would take you about eight thousand, seven hundred eighty-six 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 138161940644 cubic inches would be around 430.8 feet tall.

Recreational maths with 138161940644

• 138161940644 backwards is 446049161831
• The number of decimal digits it has is: 12
• The sum of 138161940644's digits is 47
• More coming soon!