1438688639

Names of 1438688639

• Cardinal: 1438688639 can be written as One billion, four hundred thirty-eight million, six hundred eighty-eight thousand, six hundred thirty-nine.

Scientific notation

• Scientific notation: 1.438688639 × 10⁹

Factors of 1438688639

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 6865

Divisors of 1438688639

• Number of divisors d(n): 8
• Complete list of divisors:
  1 127 3221 3517 409067 446659 11328257 1438688639
• Sum of all divisors σ(n): 1450879488
• Sum of proper divisors (its aliquot sum) s(n): 12190849
• 1438688639 is a deficient number, because the sum of its proper divisors (12190849) is less than itself. Its deficiency is 1426497790

Bases of 1438688639

• Binary: 1010101110000001010010101111111₂
• Hexadecimal: 0x55C0A57F
• Base-36: NSK39B

Squares and roots of 1438688639

• 1438688639 squared (1438688639²) is 2069824999987672321
• 1438688639 cubed (1438688639³) is 2977833712200439308277461119
• The square root of 1438688639 is 37930.0492881303
• The cube root of 1438688639 is 1128.9003422303

Scales and comparisons

• 1,438,688,639 seconds is equal to 45 years, 38 weeks, 5 days, 11 hours, 43 minutes, 59 seconds.
• To count from 1 to 1,438,688,639 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 1438688639 cubic inches would be around 94.1 feet tall.

Recreational maths with 1438688639

• 1438688639 backwards is 9368868341
• The number of decimal digits it has is: 10
• The sum of 1438688639's digits is 56
• More coming soon!