861998001397

Names of 861998001397

• Cardinal: 861998001397 can be written as Eight hundred sixty-one billion, nine hundred ninety-eight million, one thousand, three hundred ninety-seven.

Scientific notation

• Scientific notation: 8.61998001397 × 10¹¹

Factors of 861998001397

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 4134

Divisors of 861998001397

• Number of divisors d(n): 64
• Complete list of divisors:
  1 13 19 37 61 247 433 481 703 793 1159 2257 3571 5629 8227 9139 15067 16021 26413 29341 42883 46423 67849 106951 132127 208273 217831 304399 343369 501847 557479 882037 977281 1546243 1717651 2510413 2831803 3957187 4138789 6524011 8059747 12704653 18568339 20101159 29378617 32635369 53804257 57210991 94320823 104776711 153135193 241388407 381922021 743742883 1087008829 1226170699 1792095637 1990757509 3489870451 14131114777 23297243281 45368315863 66307538569 861998001397
• Sum of all divisors σ(n): 1022667600640
• Sum of proper divisors (its aliquot sum) s(n): 160669599243
• 861998001397 is a deficient number, because the sum of its proper divisors (160669599243) is less than itself. Its deficiency is 701328402154

Bases of 861998001397

• Binary: 1100100010110011000101011010110011110101₂
• Hexadecimal: 0xC8B315ACF5
• Base-36: AZZVCQNP

Squares and roots of 861998001397

• 861998001397 squared (861998001397²) is 743040554412422413951609
• 861998001397 cubed (861998001397³) is 640499472860426950495613167072397773
• The square root of 861998001397 is 928438.4747504813
• The cube root of 861998001397 is 9517.0441996691

Scales and comparisons

• 861,998,001,397 seconds is equal to 27,408 years, 45 weeks, 1 day, 17 hours, 16 minutes, 37 seconds.
• To count from 1 to 861,998,001,397 would take you about fifty-four thousand, eight hundred seventeen 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 861998001397 cubic inches would be around 793.1 feet tall.

Recreational maths with 861998001397

• 861998001397 backwards is 793100899168
• 861998001397 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 861998001397's digits is 61
• More coming soon!