18973386729

Names of 18973386729

• Cardinal: 18973386729 can be written as Eighteen billion, nine hundred seventy-three million, three hundred eighty-six thousand, seven hundred twenty-nine.

Scientific notation

• Scientific notation: 1.8973386729 × 10¹⁰

Factors of 18973386729

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 763

Divisors of 18973386729

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 9 11 27 33 71 99 121 157 213 297 363 471 521 639 781 1089 1413 1563 1727 1917 2343 3267 4239 4689 5181 5731 7029 8591 11147 14067 15543 17193 18997 21087 25773 33441 36991 46629 51579 56991 63041 77319 81797 100323 110973 122617 154737 170973 189123 231957 245391 300969 332919 367851 406901 512919 567369 736173 899767 998757 1103553 1220703 1348787 1702107 2208519 2699301 3310659 3662109 4046361 4475911 5807587 8097903 9897437 10986327 12139083 13427733 17422761 24293709 29692311 36417249 40283199 52268283 63883457 89076933 120849597 156804849 191650371 267230799 574951113 702718027 1724853339 2108154081 6324462243 18973386729
• Sum of all divisors σ(n): 31591607040
• Sum of proper divisors (its aliquot sum) s(n): 12618220311
• 18973386729 is a deficient number, because the sum of its proper divisors (12618220311) is less than itself. Its deficiency is 6355166418

Bases of 18973386729

• Binary: 10001101010111001101110011111101001₂
• Hexadecimal: 0x46AE6E7E9
• Base-36: 8PS9IW9

Squares and roots of 18973386729

• 18973386729 squared (18973386729²) is 359989403968193319441
• 18973386729 cubed (18973386729³) is 6830218179830739065188327098489
• The square root of 18973386729 is 137743.9172123401
• The cube root of 18973386729 is 2667.1551911983

Scales and comparisons

• 18,973,386,729 seconds is equal to 603 years, 15 weeks, 2 days, 9 hours, 12 minutes, 9 seconds.
• To count from 1 to 18,973,386,729 would take you about one thousand, two hundred 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 18973386729 cubic inches would be around 222.3 feet tall.

Recreational maths with 18973386729

• 18973386729 backwards is 92768337981
• The number of decimal digits it has is: 11
• The sum of 18973386729's digits is 63
• More coming soon!