18642640956474731

Names of 18642640956474731

• Cardinal: 18642640956474731 can be written as Eighteen quadrillion, six hundred forty-two trillion, six hundred forty billion, nine hundred fifty-six million, four hundred seventy-four thousand, seven hundred thirty-one.

Scientific notation

• Scientific notation: 1.8642640956474731 × 10¹⁶

Factors of 18642640956474731

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 94740617

Divisors of 18642640956474731

• Number of divisors d(n): 48
• Complete list of divisors:
  1 7 49 139 167 173 973 1169 1211 6811 8183 8477 23213 24047 28891 162491 168329 202237 1137437 1178303 1415659 4015849 28110943 94740131 196776601 663180917 4642266419 13168878209 15821601877 16390042663 92182147463 110751213139 114730298641 645275032241 775258491973 803112090487 2199202660903 2278215930157 2737137124721 15394418626321 15947511511099 19159959873047 107760930384247 111632580577693 134119719111329 380462060336219 2663234422353533 18642640956474731
• Sum of all divisors σ(n): 22100159438219520
• Sum of proper divisors (its aliquot sum) s(n): 3457518481744789
• 18642640956474731 is a deficient number, because the sum of its proper divisors (3457518481744789) is less than itself. Its deficiency is 15185122474729942

Bases of 18642640956474731

• Binary: 1000010001110110110001000010111111000101100010101101011₂
• Hexadecimal: 0x423B6217E2C56B
• Base-36: 53K9J0URCDN

Squares and roots of 18642640956474731

• 18642640956474731 squared (18642640956474731²) is 347548061832029073103591041522361
• 18642640956474731 cubed (18642640956474731³) is 6479213731853197429765305375263004647150067959891
• The square root of 18642640956474731 is 136538056.8064256985
• The cube root of 18642640956474731 is 265156.6225266077

Scales and comparisons

• 18,642,640,956,474,731 seconds is equal to 592,778,316 years, 48 weeks, 6 days, 14 hours, 32 minutes, 11 seconds.
• To count from 1 to 18,642,640,956,474,731 would take you about one billion, seven hundred seventy-eight million, three hundred thirty-four thousand, nine hundred fifty 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 18642640956474731 cubic inches would be around 22096.4 feet tall.

Recreational maths with 18642640956474731

• 18642640956474731 backwards is 13747465904624681
• The number of decimal digits it has is: 17
• The sum of 18642640956474731's digits is 77
• More coming soon!