7139009081

Names of 7139009081

• Cardinal: 7139009081 can be written as Seven billion, one hundred thirty-nine million, nine thousand and eighty-one.

Scientific notation

• Scientific notation: 7.139009081 × 10⁹

Factors of 7139009081

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 166023510

Divisors of 7139009081

• Number of divisors d(n): 4
• Complete list of divisors:
  1 43 166023467 7139009081
• Sum of all divisors σ(n): 7305032592
• Sum of proper divisors (its aliquot sum) s(n): 166023511
• 7139009081 is a deficient number, because the sum of its proper divisors (166023511) is less than itself. Its deficiency is 6972985570

Bases of 7139009081

• Binary: 110101001100001001010001000111001₂
• Hexadecimal: 0x1A984A239
• Base-36: 3A2DQNT

Squares and roots of 7139009081

• 7139009081 squared (7139009081²) is 50965450658600464561
• 7139009081 cubed (7139009081³) is 363842815069006147251797678441
• The square root of 7139009081 is 84492.6569649695
• The cube root of 7139009081 is 1925.5108853495

Scales and comparisons

• 7,139,009,081 seconds is equal to 226 years, 51 weeks, 6 days, 10 hours, 4 minutes, 41 seconds.
• To count from 1 to 7,139,009,081 would take you about four hundred fifty-three 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 7139009081 cubic inches would be around 160.5 feet tall.

Recreational maths with 7139009081

• 7139009081 backwards is 1809009317
• The number of decimal digits it has is: 10
• The sum of 7139009081's digits is 38
• More coming soon!