1385681921

Names of 1385681921

• Cardinal: 1385681921 can be written as One billion, three hundred eighty-five million, six hundred eighty-one thousand, nine hundred twenty-one.

Scientific notation

• Scientific notation: 1.385681921 × 10⁹

Factors of 1385681921

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 106590930

Divisors of 1385681921

• Number of divisors d(n): 4
• Complete list of divisors:
  1 13 106590917 1385681921
• Sum of all divisors σ(n): 1492272852
• Sum of proper divisors (its aliquot sum) s(n): 106590931
• 1385681921 is a deficient number, because the sum of its proper divisors (106590931) is less than itself. Its deficiency is 1279090990

Bases of 1385681921

• Binary: 1010010100101111101010000000001₂
• Hexadecimal: 0x5297D401
• Base-36: MWZZ0H

Squares and roots of 1385681921

• 1385681921 squared (1385681921²) is 1920114386186250241
• 1385681921 cubed (1385681921³) is 2660667791190299097735592961
• The square root of 1385681921 is 37224.7487701395
• The cube root of 1385681921 is 1114.8621816829

Scales and comparisons

• 1,385,681,921 seconds is equal to 44 years, 3 weeks, 23 hours, 38 minutes, 41 seconds.
• To count from 1 to 1,385,681,921 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 1385681921 cubic inches would be around 92.9 feet tall.

Recreational maths with 1385681921

• 1385681921 backwards is 1291865831
• The number of decimal digits it has is: 10
• The sum of 1385681921's digits is 44
• More coming soon!