18139376430

Names of 18139376430

• Cardinal: 18139376430 can be written as Eighteen billion, one hundred thirty-nine million, three hundred seventy-six thousand, four hundred thirty.

Scientific notation

• Scientific notation: 1.813937643 × 10¹⁰

Factors of 18139376430

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 28792678

Divisors of 18139376430

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 30 35 42 45 63 70 90 105 126 210 315 630 28792661 57585322 86377983 143963305 172755966 201548627 259133949 287926610 403097254 431889915 518267898 604645881 863779830 1007743135 1209291762 1295669745 1813937643 2015486270 2591339490 3023229405 3627875286 6046458810 9069688215 18139376430
• Sum of all divisors σ(n): 53899863264
• Sum of proper divisors (its aliquot sum) s(n): 35760486834
• 18139376430 is an abundant number, because the sum of its proper divisors (35760486834) is greater than itself. Its abundance is 17621110404

Bases of 18139376430

• Binary: 10000111001001100001110101100101110₂
• Hexadecimal: 0x43930EB2E
• Base-36: 8BZPSFI

Squares and roots of 18139376430

• 18139376430 squared (18139376430²) is 329036977269239544900
• 18139376430 cubed (18139376430³) is 5968525590076089564782986707000
• The square root of 18139376430 is 134682.5023156311
• The cube root of 18139376430 is 2627.4882615611

Scales and comparisons

• 18,139,376,430 seconds is equal to 576 years, 40 weeks, 2 days, 11 hours, 40 minutes, 30 seconds.
• To count from 1 to 18,139,376,430 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 18139376430 cubic inches would be around 219 feet tall.

Recreational maths with 18139376430

• 18139376430 backwards is 03467393181
• 18139376430 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18139376430's digits is 45
• More coming soon!