138693988979

Names of 138693988979

• Cardinal: 138693988979 can be written as One hundred thirty-eight billion, six hundred ninety-three million, nine hundred eighty-eight thousand, nine hundred seventy-nine.

Scientific notation

• Scientific notation: 1.38693988979 × 10¹¹

Factors of 138693988979

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 128

Divisors of 138693988979

• Number of divisors d(n): 96
• Complete list of divisors:
  1 7 13 41 49 67 91 169 287 343 469 533 637 871 1183 2009 2197 2747 3283 3731 4459 4489 6097 6929 8281 11323 14063 15379 19229 22981 26117 31423 35711 42679 48503 57967 58357 79261 90077 107653 134603 147199 182819 184049 219961 249977 298753 339521 408499 464243 554827 630539 753571 758641 942221 1030393 1288343 1539727 1749839 2376647 2392637 2859493 3249701 3883789 4413773 5310487 6035159 7212751 9018401 9862333 12248873 16748459 20016451 22747907 30896411 31104281 37173409 42246113 50489257 63128807 69036331 117239213 159235349 217729967 260213863 295722791 404355653 483254317 820674491 1524109769 2070059537 2830489571 3382780219 10668768383 19813426997 138693988979
• Sum of all divisors σ(n): 182207088000
• Sum of proper divisors (its aliquot sum) s(n): 43513099021
• 138693988979 is a deficient number, because the sum of its proper divisors (43513099021) is less than itself. Its deficiency is 95180889958

Bases of 138693988979

• Binary: 10000001001010110011100101001001110011₂
• Hexadecimal: 0x204ACE5273
• Base-36: 1RPQTISZ

Squares and roots of 138693988979

• 138693988979 squared (138693988979²) is 19236022578906973462441
• 138693988979 cubed (138693988979³) is 2667920703558718935266037524437739
• The square root of 138693988979 is 372416.4187827921
• The cube root of 138693988979 is 5176.2973119305

Scales and comparisons

• 138,693,988,979 seconds is equal to 4,410 years, 2 weeks, 12 hours, 2 minutes, 59 seconds.
• To count from 1 to 138,693,988,979 would take you about eight thousand, eight hundred twenty 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 138693988979 cubic inches would be around 431.4 feet tall.

Recreational maths with 138693988979

• 138693988979 backwards is 979889396831
• The number of decimal digits it has is: 12
• The sum of 138693988979's digits is 80
• More coming soon!