1989653821

Names of 1989653821

• Cardinal: 1989653821 can be written as One billion, nine hundred eighty-nine million, six hundred fifty-three thousand, eight hundred twenty-one.

Scientific notation

• Scientific notation: 1.989653821 × 10⁹

Factors of 1989653821

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 89378

Divisors of 1989653821

• Number of divisors d(n): 4
• Complete list of divisors:
  1 41959 47419 1989653821
• Sum of all divisors σ(n): 1989743200
• Sum of proper divisors (its aliquot sum) s(n): 89379
• 1989653821 is a deficient number, because the sum of its proper divisors (89379) is less than itself. Its deficiency is 1989564442

Bases of 1989653821

• Binary: 1110110100101111011010100111101₂
• Hexadecimal: 0x7697B53D
• Base-36: WWL6PP

Squares and roots of 1989653821

• 1989653821 squared (1989653821²) is 3958722327419900041
• 1989653821 cubed (1989653821³) is 7876487005029017188013706661
• The square root of 1989653821 is 44605.5357663149
• The cube root of 1989653821 is 1257.7447313547

Scales and comparisons

• 1,989,653,821 seconds is equal to 63 years, 13 weeks, 5 days, 9 hours, 37 minutes, 1 second.
• To count from 1 to 1,989,653,821 would take you about one hundred twenty-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 1989653821 cubic inches would be around 104.8 feet tall.

Recreational maths with 1989653821

• 1989653821 backwards is 1283569891
• The number of decimal digits it has is: 10
• The sum of 1989653821's digits is 52
• More coming soon!