138879499018

Names of 138879499018

• Cardinal: 138879499018 can be written as One hundred thirty-eight billion, eight hundred seventy-nine million, four hundred ninety-nine thousand and eighteen.

Scientific notation

• Scientific notation: 1.38879499018 × 10¹¹

Factors of 138879499018

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 44167

Divisors of 138879499018

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 13 26 29 53 58 79 106 158 377 689 754 1027 1378 1537 2054 2291 3074 4187 4582 8374 19981 29783 39962 43991 54431 59566 87982 108862 121423 242846 571883 1143766 1275739 1578499 2331523 2551478 3156998 3475289 4663046 6950578 16584607 30309799 33169214 45178757 60619598 67614167 90357514 100783381 135228334 184190317 201566762 368380634 878984171 1310183953 1757968342 2394474121 2620367906 4788948242 5341519193 10683038386 69439749509 138879499018
• Sum of all divisors σ(n): 239457254400
• Sum of proper divisors (its aliquot sum) s(n): 100577755382
• 138879499018 is a deficient number, because the sum of its proper divisors (100577755382) is less than itself. Its deficiency is 38301743636

Bases of 138879499018

• Binary: 10000001010101110111001111101100001010₂
• Hexadecimal: 0x2055DCFB0A
• Base-36: 1RST9N9M

Squares and roots of 138879499018

• 138879499018 squared (138879499018²) is 19287515247490662964324
• 138879499018 cubed (138879499018³) is 2678640454873539554118003927033832
• The square root of 138879499018 is 372665.3982032675
• The cube root of 138879499018 is 5178.6041345781

Scales and comparisons

• 138,879,499,018 seconds is equal to 4,415 years, 48 weeks, 5 days, 14 hours, 36 minutes, 58 seconds.
• To count from 1 to 138,879,499,018 would take you about eight thousand, eight hundred thirty-one 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 138879499018 cubic inches would be around 431.6 feet tall.

Recreational maths with 138879499018

• 138879499018 backwards is 810994978831
• The number of decimal digits it has is: 12
• The sum of 138879499018's digits is 67
• More coming soon!