1438668381

Names of 1438668381

• Cardinal: 1438668381 can be written as One billion, four hundred thirty-eight million, six hundred sixty-eight thousand, three hundred eighty-one.

Scientific notation

• Scientific notation: 1.438668381 × 10⁹

Factors of 1438668381

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 94411

Divisors of 1438668381

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 5387 16161 89021 267063 479556127 1438668381
• Sum of all divisors σ(n): 1918602144
• Sum of proper divisors (its aliquot sum) s(n): 479933763
• 1438668381 is a deficient number, because the sum of its proper divisors (479933763) is less than itself. Its deficiency is 958734618

Bases of 1438668381

• Binary: 1010101110000000101011001011101₂
• Hexadecimal: 0x55C0565D
• Base-36: NSJNML

Squares and roots of 1438668381

• 1438668381 squared (1438668381²) is 2069766710489161161
• 1438668381 cubed (1438668381³) is 2977707922427137205543950341
• The square root of 1438668381 is 37929.7822429815
• The cube root of 1438668381 is 1128.8950435693

Scales and comparisons

• 1,438,668,381 seconds is equal to 45 years, 38 weeks, 5 days, 6 hours, 6 minutes, 21 seconds.
• To count from 1 to 1,438,668,381 would take you about ninety-one 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 1438668381 cubic inches would be around 94.1 feet tall.

Recreational maths with 1438668381

• 1438668381 backwards is 1838668341
• The number of decimal digits it has is: 10
• The sum of 1438668381's digits is 48
• More coming soon!