1355217981

Names of 1355217981

• Cardinal: 1355217981 can be written as One billion, three hundred fifty-five million, two hundred seventeen thousand, nine hundred eighty-one.

Scientific notation

• Scientific notation: 1.355217981 × 10⁹

Factors of 1355217981

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 939220

Divisors of 1355217981

• Number of divisors d(n): 16
• Complete list of divisors:
  1 3 13 37 39 111 481 1443 939167 2817501 12209171 34749179 36627513 104247537 451739327 1355217981
• Sum of all divisors σ(n): 1998549504
• Sum of proper divisors (its aliquot sum) s(n): 643331523
• 1355217981 is a deficient number, because the sum of its proper divisors (643331523) is less than itself. Its deficiency is 711886458

Bases of 1355217981

• Binary: 1010000110001101111110000111101₂
• Hexadecimal: 0x50C6FC3D
• Base-36: MEV0VX

Squares and roots of 1355217981

• 1355217981 squared (1355217981²) is 1836615776025716361
• 1355217981 cubed (1355217981³) is 2489014723858319530833087141
• The square root of 1355217981 is 36813.2853872077
• The cube root of 1355217981 is 1106.6315601413

Scales and comparisons

• 1,355,217,981 seconds is equal to 43 years, 4 weeks, 5 days, 9 hours, 26 minutes, 21 seconds.
• To count from 1 to 1,355,217,981 would take you about eighty-six 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 1355217981 cubic inches would be around 92.2 feet tall.

Recreational maths with 1355217981

• 1355217981 backwards is 1897125531
• The number of decimal digits it has is: 10
• The sum of 1355217981's digits is 42
• More coming soon!