8138713642

Names of 8138713642

• Cardinal: 8138713642 can be written as Eight billion, one hundred thirty-eight million, seven hundred thirteen thousand, six hundred forty-two.

Scientific notation

• Scientific notation: 8.138713642 × 10⁹

Factors of 8138713642

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 140322680

Divisors of 8138713642

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 29 58 140322649 280645298 4069356821 8138713642
• Sum of all divisors σ(n): 12629038500
• Sum of proper divisors (its aliquot sum) s(n): 4490324858
• 8138713642 is a deficient number, because the sum of its proper divisors (4490324858) is less than itself. Its deficiency is 3648388784

Bases of 8138713642

• Binary: 111100101000110101110101000101010₂
• Hexadecimal: 0x1E51AEA2A
• Base-36: 3QLKVMY

Squares and roots of 8138713642

• 8138713642 squared (8138713642²) is 66238659746476904164
• 8138713642 cubed (8138713642³) is 539097483706447841357473405288
• The square root of 8138713642 is 90214.8194145507
• The cube root of 8138713642 is 2011.4932957253

Scales and comparisons

• 8,138,713,642 seconds is equal to 258 years, 40 weeks, 6 days, 1 hour, 47 minutes, 22 seconds.
• To count from 1 to 8,138,713,642 would take you about five 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 8138713642 cubic inches would be around 167.6 feet tall.

Recreational maths with 8138713642

• 8138713642 backwards is 2463178318
• The number of decimal digits it has is: 10
• The sum of 8138713642's digits is 43
• More coming soon!