18889732290

Names of 18889732290

• Cardinal: 18889732290 can be written as Eighteen billion, eight hundred eighty-nine million, seven hundred thirty-two thousand, two hundred ninety.

Scientific notation

• Scientific notation: 1.888973229 × 10¹⁰

Factors of 18889732290

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 400325

Divisors of 18889732290

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 5 6 10 11 13 15 22 26 30 33 39 55 65 66 78 110 121 130 143 165 195 242 286 330 363 390 429 605 715 726 858 1210 1430 1573 1815 2145 3146 3630 4290 4719 7865 9438 15730 23595 47190 400291 800582 1200873 2001455 2401746 4002910 4403201 5203783 6004365 8806402 10407566 12008730 13209603 15611349 22016005 26018915 26419206 31222698 44032010 48435211 52037830 57241613 66048015 78056745 96870422 114483226 132096030 145305633 156113490 171724839 242176055 286208065 290611266 343449678 484352110 572416130 629657743 726528165 858624195 1259315486 1453056330 1717248390 1888973229 3148288715 3777946458 6296577430 9444866145 18889732290
• Sum of all divisors σ(n): 53664746688
• Sum of proper divisors (its aliquot sum) s(n): 34775014398
• 18889732290 is an abundant number, because the sum of its proper divisors (34775014398) is greater than itself. Its abundance is 15885282108

Bases of 18889732290

• Binary: 10001100101111010100111000011000010₂
• Hexadecimal: 0x465EA70C2
• Base-36: 8OEGIPU

Squares and roots of 18889732290

• 18889732290 squared (18889732290²) is 356821985987868644100
• 18889732290 cubed (18889732290³) is 6740271790496969874734287989000
• The square root of 18889732290 is 137439.9224752401
• The cube root of 18889732290 is 2663.2295506123

Scales and comparisons

• 18,889,732,290 seconds is equal to 600 years, 33 weeks, 3 hours, 51 minutes, 30 seconds.
• To count from 1 to 18,889,732,290 would take you about one thousand, two hundred 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 18889732290 cubic inches would be around 221.9 feet tall.

Recreational maths with 18889732290

• 18889732290 backwards is 09223798881
• The number of decimal digits it has is: 11
• The sum of 18889732290's digits is 57
• More coming soon!