138921909007

Names of 138921909007

• Cardinal: 138921909007 can be written as One hundred thirty-eight billion, nine hundred twenty-one million, nine hundred nine thousand and seven.

Scientific notation

• Scientific notation: 1.38921909007 × 10¹¹

Factors of 138921909007

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 628557

Divisors of 138921909007

• Number of divisors d(n): 8
• Complete list of divisors:
  1 7 33343 233401 595207 4166449 19845987001 138921909007
• Sum of all divisors σ(n): 158772924416
• Sum of proper divisors (its aliquot sum) s(n): 19851015409
• 138921909007 is a deficient number, because the sum of its proper divisors (19851015409) is less than itself. Its deficiency is 119070893598

Bases of 138921909007

• Binary: 10000001011000011001000001101100001111₂
• Hexadecimal: 0x2058641B0F
• Base-36: 1RTIIN0V

Squares and roots of 138921909007

• 138921909007 squared (138921909007²) is 19299296802149187726049
• 138921909007 cubed (138921909007³) is 2681095154247255539317140421623343
• The square root of 138921909007 is 372722.2947544191
• The cube root of 138921909007 is 5179.1312154743

Scales and comparisons

• 138,921,909,007 seconds is equal to 4,417 years, 14 weeks, 6 days, 11 hours, 10 minutes, 7 seconds.
• To count from 1 to 138,921,909,007 would take you about eight thousand, eight hundred thirty-four 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 138921909007 cubic inches would be around 431.6 feet tall.

Recreational maths with 138921909007

• 138921909007 backwards is 700909129831
• The number of decimal digits it has is: 12
• The sum of 138921909007's digits is 49
• More coming soon!