1218122913

Names of 1218122913

• Cardinal: 1218122913 can be written as One billion, two hundred eighteen million, one hundred twenty-two thousand, nine hundred thirteen.

Scientific notation

• Scientific notation: 1.218122913 × 10⁹

Factors of 1218122913

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 622

Divisors of 1218122913

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 7 17 21 51 67 119 127 201 357 381 401 469 889 1139 1203 1407 2159 2667 2807 3417 6477 6817 7973 8421 8509 15113 20451 23919 25527 26867 45339 47719 50927 59563 80601 143157 144653 152781 178689 188069 356489 433959 456739 564207 865759 1012571 1069467 1370217 2597277 3037713 3197173 3412109 6060313 9591519 10236327 18180939 23884763 58005853 71654289 174017559 406040971 1218122913
• Sum of all divisors σ(n): 2015428608
• Sum of proper divisors (its aliquot sum) s(n): 797305695
• 1218122913 is a deficient number, because the sum of its proper divisors (797305695) is less than itself. Its deficiency is 420817218

Bases of 1218122913

• Binary: 1001000100110110001010010100001₂
• Hexadecimal: 0x489B14A1
• Base-36: K58LNL

Squares and roots of 1218122913

• 1218122913 squared (1218122913²) is 1483823431175605569
• 1218122913 cubed (1218122913³) is 1807479320361283670249302497
• The square root of 1218122913 is 34901.6176272677
• The cube root of 1218122913 is 1067.9814370311

Scales and comparisons

• 1,218,122,913 seconds is equal to 38 years, 38 weeks, 15 hours, 28 minutes, 33 seconds.
• To count from 1 to 1,218,122,913 would take you about seventy-seven 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 1218122913 cubic inches would be around 89 feet tall.

Recreational maths with 1218122913

• 1218122913 backwards is 3192218121
• The number of decimal digits it has is: 10
• The sum of 1218122913's digits is 30
• More coming soon!