1397515021

Names of 1397515021

• Cardinal: 1397515021 can be written as One billion, three hundred ninety-seven million, five hundred fifteen thousand and twenty-one.

Scientific notation

• Scientific notation: 1.397515021 × 10⁹

Factors of 1397515021

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 1938411

Divisors of 1397515021

• Number of divisors d(n): 8
• Complete list of divisors:
  1 7 103 721 1938301 13568107 199645003 1397515021
• Sum of all divisors σ(n): 1612667264
• Sum of proper divisors (its aliquot sum) s(n): 215152243
• 1397515021 is a deficient number, because the sum of its proper divisors (215152243) is less than itself. Its deficiency is 1182362778

Bases of 1397515021

• Binary: 1010011010011000110001100001101₂
• Hexadecimal: 0x534C630D
• Base-36: N41LHP

Squares and roots of 1397515021

• 1397515021 squared (1397515021²) is 1953048233920630441
• 1397515021 cubed (1397515021³) is 2729414243641602763087354261
• The square root of 1397515021 is 37383.3521905139
• The cube root of 1397515021 is 1118.0266647185

Scales and comparisons

• 1,397,515,021 seconds is equal to 44 years, 22 weeks, 4 days, 22 hours, 37 minutes, 1 second.
• To count from 1 to 1,397,515,021 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 1397515021 cubic inches would be around 93.2 feet tall.

Recreational maths with 1397515021

• 1397515021 backwards is 1205157931
• The number of decimal digits it has is: 10
• The sum of 1397515021's digits is 34
• More coming soon!