18138509214

Names of 18138509214

• Cardinal: 18138509214 can be written as Eighteen billion, one hundred thirty-eight million, five hundred nine thousand, two hundred fourteen.

Scientific notation

• Scientific notation: 1.8138509214 × 10¹⁰

Factors of 18138509214

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 42224

Divisors of 18138509214

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 3 6 7 14 21 42 17419 24793 34838 49586 52257 74379 104514 121933 148758 173551 243866 347102 365799 520653 731598 1041306 431869267 863738534 1295607801 2591215602 3023084869 6046169738 9069254607 18138509214
• Sum of all divisors σ(n): 41463502080
• Sum of proper divisors (its aliquot sum) s(n): 23324992866
• 18138509214 is an abundant number, because the sum of its proper divisors (23324992866) is greater than itself. Its abundance is 5186483652

Bases of 18138509214

• Binary: 10000111001001000111010111110011110₂
• Hexadecimal: 0x43923AF9E
• Base-36: 8BZ77A6

Squares and roots of 18138509214

• 18138509214 squared (18138509214²) is 329005516506362897796
• 18138509214 cubed (18138509214³) is 5967669592607492511300486292344
• The square root of 18138509214 is 134679.2827943481
• The cube root of 18138509214 is 2627.4463888213

Scales and comparisons

• 18,138,509,214 seconds is equal to 576 years, 38 weeks, 6 days, 10 hours, 46 minutes, 54 seconds.
• To count from 1 to 18,138,509,214 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 18138509214 cubic inches would be around 219 feet tall.

Recreational maths with 18138509214

• 18138509214 backwards is 41290583181
• 18138509214 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18138509214's digits is 42
• More coming soon!