1389809681

Names of 1389809681

• Cardinal: 1389809681 can be written as One billion, three hundred eighty-nine million, eight hundred nine thousand, six hundred eighty-one.

Scientific notation

• Scientific notation: 1.389809681 × 10⁹

Factors of 1389809681

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 170071

Divisors of 1389809681

• Number of divisors d(n): 8
• Complete list of divisors:
  1 13 631 8203 169427 2202551 106908437 1389809681
• Sum of all divisors σ(n): 1499098944
• Sum of proper divisors (its aliquot sum) s(n): 109289263
• 1389809681 is a deficient number, because the sum of its proper divisors (109289263) is less than itself. Its deficiency is 1280520418

Bases of 1389809681

• Binary: 1010010110101101101000000010001₂
• Hexadecimal: 0x52D6D011
• Base-36: MZGG0H

Squares and roots of 1389809681

• 1389809681 squared (1389809681²) is 1931570949401321761
• 1389809681 cubed (1389809681³) is 2684516005016318137633768241
• The square root of 1389809681 is 37280.1513006587
• The cube root of 1389809681 is 1115.9680924343

Scales and comparisons

• 1,389,809,681 seconds is equal to 44 years, 9 weeks, 6 days, 18 hours, 14 minutes, 41 seconds.
• To count from 1 to 1,389,809,681 would take you about eighty-eight 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 1389809681 cubic inches would be around 93 feet tall.

Recreational maths with 1389809681

• 1389809681 backwards is 1869089831
• The number of decimal digits it has is: 10
• The sum of 1389809681's digits is 53
• More coming soon!