18729741022412464

Names of 18729741022412464

• Cardinal: 18729741022412464 can be written as Eighteen quadrillion, seven hundred twenty-nine trillion, seven hundred forty-one billion, twenty-two million, four hundred twelve thousand, four hundred sixty-four.

Scientific notation

• Scientific notation: 1.8729741022412464 × 10¹⁶

Factors of 18729741022412464

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1457794288879

Divisors of 18729741022412464

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 4 8 11 16 22 44 73 88 146 176 292 584 803 1168 1606 3212 6424 12848 1457794288793 2915588577586 5831177155172 11662354310344 16035737176723 23324708620688 32071474353446 64142948706892 106418983081889 128285897413784 212837966163778 256571794827568 425675932327556 851351864655112 1170608813900779 1702703729310224 2341217627801558 4682435255603116 9364870511206232 18729741022412464
• Sum of all divisors σ(n): 40130161181921232
• Sum of proper divisors (its aliquot sum) s(n): 21400420159508768
• 18729741022412464 is an abundant number, because the sum of its proper divisors (21400420159508768) is greater than itself. Its abundance is 2670679137096304

Bases of 18729741022412464

• Binary: 1000010100010101001100110101000011000000011111010110000₂
• Hexadecimal: 0x428A99A8603EB0
• Base-36: 54F508P5TPS

Squares and roots of 18729741022412464

• 18729741022412464 squared (18729741022412464²) is 350803198766640292285966542551296
• 18729741022412464 cubed (18729741022412464³) is 6570453062733056178122621228459956134471389753344
• The square root of 18729741022412464 is 136856644.0565180015
• The cube root of 18729741022412464 is 265568.9261425627

Scales and comparisons

• 18,729,741,022,412,464 seconds is equal to 595,547,829 years, 32 weeks, 1 day, 15 hours, 1 minute, 4 seconds.
• To count from 1 to 18,729,741,022,412,464 would take you about one billion, seven hundred eighty-six million, six hundred forty-three thousand, four hundred 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 18729741022412464 cubic inches would be around 22130.7 feet tall.

Recreational maths with 18729741022412464

• 18729741022412464 backwards is 46421422014792781
• The number of decimal digits it has is: 17
• The sum of 18729741022412464's digits is 64
• More coming soon!