18138324347

Names of 18138324347

• Cardinal: 18138324347 can be written as Eighteen billion, one hundred thirty-eight million, three hundred twenty-four thousand, three hundred forty-seven.

Scientific notation

• Scientific notation: 1.8138324347 × 10¹⁰

Factors of 18138324347

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 126

Divisors of 18138324347

• Number of divisors d(n): 72
• Complete list of divisors:
  1 11 13 31 71 121 143 169 341 403 781 923 961 1573 1859 2197 2201 3751 4433 5239 8591 10153 10571 11999 12493 20449 24167 24211 28613 48763 57629 68107 68231 111683 116281 131989 137423 155987 162409 265837 266321 314743 371969 633919 749177 750541 887003 1451879 1511653 1715857 1786499 2111317 3462173 4091659 4835597 8240947 8255951 9757033 11531039 18874427 19651489 23224487 45008249 53191567 107327363 126841429 149903507 255469357 585107237 1395255719 1648938577 18138324347
• Sum of all divisors σ(n): 22631343840
• Sum of proper divisors (its aliquot sum) s(n): 4493019493
• 18138324347 is a deficient number, because the sum of its proper divisors (4493019493) is less than itself. Its deficiency is 13645304854

Bases of 18138324347

• Binary: 10000111001001000001101110101111011₂
• Hexadecimal: 0x43920DD7B
• Base-36: 8BZ38MZ

Squares and roots of 18138324347

• 18138324347 squared (18138324347²) is 328998810116972976409
• 18138324347 cubed (18138324347³) is 5967487127678720855940421329923
• The square root of 18138324347 is 134678.5964695207
• The cube root of 18138324347 is 2627.4374625129

Scales and comparisons

• 18,138,324,347 seconds is equal to 576 years, 38 weeks, 4 days, 7 hours, 25 minutes, 47 seconds.
• To count from 1 to 18,138,324,347 would take you about one thousand, one hundred fifty-three 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 18138324347 cubic inches would be around 219 feet tall.

Recreational maths with 18138324347

• 18138324347 backwards is 74342383181
• The number of decimal digits it has is: 11
• The sum of 18138324347's digits is 44
• More coming soon!