18739418439

Names of 18739418439

• Cardinal: 18739418439 can be written as Eighteen billion, seven hundred thirty-nine million, four hundred eighteen thousand, four hundred thirty-nine.

Scientific notation

• Scientific notation: 1.8739418439 × 10¹⁰

Factors of 18739418439

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 691

Divisors of 18739418439

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 7 19 21 31 49 57 93 133 147 217 343 399 589 631 651 931 1029 1519 1767 1893 2401 2793 4123 4417 4557 6517 7203 10633 11989 12369 13251 16807 19551 19561 28861 30919 31899 35967 45619 50421 58683 74431 83923 86583 92757 136857 136927 202027 216433 223293 251769 319333 371659 410781 521017 587461 606081 649299 957999 958489 1114977 1414189 1515031 1563051 1762383 2601613 2875467 4112227 4242567 4545093 6709423 7804839 9899323 10605217 12336681 18211291 20128269 28785589 29697969 31815651 46965961 54633873 86356767 127479037 140897883 201499123 328761727 382437111 604497369 892353259 986285181 2677059777 6246472813 18739418439
• Sum of all divisors σ(n): 31724175360
• Sum of proper divisors (its aliquot sum) s(n): 12984756921
• 18739418439 is a deficient number, because the sum of its proper divisors (12984756921) is less than itself. Its deficiency is 5754661518

Bases of 18739418439

• Binary: 10001011100111101001101010101000111₂
• Hexadecimal: 0x45CF4D547
• Base-36: 8LWYRT3

Squares and roots of 18739418439

• 18739418439 squared (18739418439²) is 351165803431933196721
• 18739418439 cubed (18739418439³) is 6580642931978618428049721738519
• The square root of 18739418439 is 136891.9955256697
• The cube root of 18739418439 is 2656.1465695153

Scales and comparisons

• 18,739,418,439 seconds is equal to 595 years, 44 weeks, 3 days, 10 hours, 39 seconds.
• To count from 1 to 18,739,418,439 would take you about one thousand, one hundred ninety-one 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 18739418439 cubic inches would be around 221.3 feet tall.

Recreational maths with 18739418439

• 18739418439 backwards is 93481493781
• 18739418439 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18739418439's digits is 57
• More coming soon!