18158640516

Names of 18158640516

• Cardinal: 18158640516 can be written as Eighteen billion, one hundred fifty-eight million, six hundred forty thousand, five hundred sixteen.

Scientific notation

• Scientific notation: 1.8158640516 × 10¹⁰

Factors of 18158640516

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 649

Divisors of 18158640516

• Number of divisors d(n): 81
• Complete list of divisors:
  1 2 3 4 6 9 12 18 36 37 74 111 148 222 333 444 607 666 1214 1332 1369 1821 2428 2738 3642 4107 5463 5476 7284 8214 10926 12321 16428 21852 22459 24642 44918 49284 67377 89836 134754 202131 269508 368449 404262 736898 808524 830983 1105347 1473796 1661966 2210694 2492949 3316041 3323932 4421388 4985898 6632082 7478847 9971796 13264164 13632613 14957694 27265226 29915388 40897839 54530452 81795678 122693517 163591356 245387034 490774068 504406681 1008813362 1513220043 2017626724 3026440086 4539660129 6052880172 9079320258 18158640516
• Sum of all divisors σ(n): 47252951109
• Sum of proper divisors (its aliquot sum) s(n): 29094310593
• 18158640516 is an abundant number, because the sum of its proper divisors (29094310593) is greater than itself. Its abundance is 10935670077

Bases of 18158640516

• Binary: 10000111010010101101101110110000100₂
• Hexadecimal: 0x43A56DD84
• Base-36: 8CB6OP0

Squares and roots of 18158640516

• 18158640516 squared (18158640516²) is 329736225389316746256
• 18158640516 cubed (18158640516³) is 5987561581947354942121492908096
• 18158640516 is a perfect square number. Its square root is 134754
• The cube root of 18158640516 is 2628.4180666257

Scales and comparisons

• 18,158,640,516 seconds is equal to 577 years, 20 weeks, 1 day, 10 hours, 48 minutes, 36 seconds.
• To count from 1 to 18,158,640,516 would take you about one thousand, one hundred fifty-four 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 18158640516 cubic inches would be around 219 feet tall.

Recreational maths with 18158640516

• 18158640516 backwards is 61504685181
• The number of decimal digits it has is: 11
• The sum of 18158640516's digits is 45
• More coming soon!