7987972513

Names of 7987972513

• Cardinal: 7987972513 can be written as Seven billion, nine hundred eighty-seven million, nine hundred seventy-two thousand, five hundred thirteen.

Scientific notation

• Scientific notation: 7.987972513 × 10⁹

Factors of 7987972513

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 2957523

Divisors of 7987972513

• Number of divisors d(n): 8
• Complete list of divisors:
  1 37 73 2701 2957413 109424281 215891149 7987972513
• Sum of all divisors σ(n): 8316248168
• Sum of proper divisors (its aliquot sum) s(n): 328275655
• 7987972513 is a deficient number, because the sum of its proper divisors (328275655) is less than itself. Its deficiency is 7659696858

Bases of 7987972513

• Binary: 111011100000111101100100110100001₂
• Hexadecimal: 0x1DC1EC9A1
• Base-36: 3O3TZ1D

Squares and roots of 7987972513

• 7987972513 squared (7987972513²) is 63807704868443535169
• 7987972513 cubed (7987972513³) is 509694192606743240022520809697
• The square root of 7987972513 is 89375.4581135113
• The cube root of 7987972513 is 1998.9972067035

Scales and comparisons

• 7,987,972,513 seconds is equal to 253 years, 51 weeks, 4 days, 9 hours, 15 minutes, 13 seconds.
• To count from 1 to 7,987,972,513 would take you about five hundred seven 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 7987972513 cubic inches would be around 166.6 feet tall.

Recreational maths with 7987972513

• 7987972513 backwards is 3152797897
• The number of decimal digits it has is: 10
• The sum of 7987972513's digits is 58
• More coming soon!