2138972810

Names of 2138972810

• Cardinal: 2138972810 can be written as Two billion, one hundred thirty-eight million, nine hundred seventy-two thousand, eight hundred ten.

Scientific notation

• Scientific notation: 2.13897281 × 10⁹

Factors of 2138972810

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 234

Divisors of 2138972810

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 5 10 13 17 26 34 65 85 130 170 197 221 289 394 442 578 985 1105 1445 1970 2210 2561 2890 3349 3757 4913 5122 6698 7514 9826 12805 16745 18785 24565 25610 33490 37570 43537 49130 56933 63869 83521 87074 113866 127738 167042 217685 284665 319345 417605 435370 569330 638690 740129 835210 967861 1085773 1480258 1935722 2171546 3700645 4839305 5428865 7401290 9678610 10857730 12582193 16453637 25164386 32907274 62910965 82268185 125821930 164536370 213897281 427794562 1069486405 2138972810
• Sum of all divisors σ(n): 4427820936
• Sum of proper divisors (its aliquot sum) s(n): 2288848126
• 2138972810 is an abundant number, because the sum of its proper divisors (2288848126) is greater than itself. Its abundance is 149875316

Bases of 2138972810

• Binary: 1111111011111100010001010001010₂
• Hexadecimal: 0x7F7E228A
• Base-36: ZDHLZE

Squares and roots of 2138972810

• 2138972810 squared (2138972810²) is 4575204681919296100
• 2138972810 cubed (2138972810³) is 9786238414810072972239041000
• The square root of 2138972810 is 46249.0303682143
• The cube root of 2138972810 is 1288.4525261527

Scales and comparisons

• 2,138,972,810 seconds is equal to 68 years, 4 days, 15 hours, 6 minutes, 50 seconds.
• To count from 1 to 2,138,972,810 would take you about one hundred thirty-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 2138972810 cubic inches would be around 107.4 feet tall.

Recreational maths with 2138972810

• 2138972810 backwards is 0182798312
• The number of decimal digits it has is: 10
• The sum of 2138972810's digits is 41
• More coming soon!