1087981921

Names of 1087981921

• Cardinal: 1087981921 can be written as One billion, eighty-seven million, nine hundred eighty-one thousand, nine hundred twenty-one.

Scientific notation

• Scientific notation: 1.087981921 × 10⁹

Factors of 1087981921

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 8392

Divisors of 1087981921

• Number of divisors d(n): 16
• Complete list of divisors:
  1 13 31 337 403 4381 8011 10447 104143 135811 248341 2699707 3228433 35096191 83690917 1087981921
• Sum of all divisors σ(n): 1213209088
• Sum of proper divisors (its aliquot sum) s(n): 125227167
• 1087981921 is a deficient number, because the sum of its proper divisors (125227167) is less than itself. Its deficiency is 962754754

Bases of 1087981921

• Binary: 1000000110110010100100101100001₂
• Hexadecimal: 0x40D94961
• Base-36: HZR881

Squares and roots of 1087981921

• 1087981921 squared (1087981921²) is 1183704660422850241
• 1087981921 cubed (1087981921³) is 1287849270343505277498492961
• The square root of 1087981921 is 32984.5709537051
• The cube root of 1087981921 is 1028.5069393935

Scales and comparisons

• 1,087,981,921 seconds is equal to 34 years, 30 weeks, 6 days, 9 hours, 12 minutes, 1 second.
• To count from 1 to 1,087,981,921 would take you about sixty-nine 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 1087981921 cubic inches would be around 85.7 feet tall.

Recreational maths with 1087981921

• 1087981921 backwards is 1291897801
• The number of decimal digits it has is: 10
• The sum of 1087981921's digits is 46
• More coming soon!