18489389391808

Names of 18489389391808

• Cardinal: 18489389391808 can be written as Eighteen trillion, four hundred eighty-nine billion, three hundred eighty-nine million, three hundred ninety-one thousand, eight hundred eight.

Scientific notation

• Scientific notation: 1.8489389391808 × 10¹³

Factors of 18489389391808

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 9370

Divisors of 18489389391808

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 4 8 16 23 32 46 61 64 92 122 184 244 368 488 529 736 976 1058 1093 1403 1472 1952 2116 2186 2806 3904 4232 4372 5612 8191 8464 8744 11224 16382 16928 17488 22448 25139 32269 32764 33856 34976 44896 50278 64538 65528 66673 69952 89792 100556 129076 131056 133346 188393 201112 258152 262112 266692 376786 402224 499651 516304 524224 533384 578197 753572 804448 999302 1032608 1066768 1156394 1507144 1533479 1608896 1998604 2065216 2133536 2312788 3014288 3066958 3997208 4267072 4333039 4625576 6028576 6133916 7994416 8666078 8952763 9251152 11491973 12057152 12267832 15988832 17332156 17905526 18502304 22983946 24535664 31977664 34664312 35270017 35811052 37004608 45967892 49071328 69328624 70540034 71622104 91935784 98142656 138657248 141080068 143244208 183871568 205913549 264315379 277314496 282160136 286488416 367743136 411827098 528630758 546118543 564320272 572976832 735486272 823654196 1057261516 1092237086 1128640544 1647308392 2114523032 2184474172 2257281088 3294616784 4229046064 4368948344 4736011627 6589233568 8458092128 8737896688 9472023254 12560726489 13178467136 16916184256 17475793376 18944046508 25121452978 34951586752 37888093016 50242905956 75776186032 100485811912 151552372064 200971623824 288896709247 303104744128 401943247648 577793418494 803886495296 1155586836988 2311173673976 4622347347952 9244694695904 18489389391808
• Sum of all divisors σ(n): 39023642771456
• Sum of proper divisors (its aliquot sum) s(n): 20534253379648
• 18489389391808 is an abundant number, because the sum of its proper divisors (20534253379648) is greater than itself. Its abundance is 2044863987840

Bases of 18489389391808

• Binary: 100001101000011100101011111001001111111000000₂
• Hexadecimal: 0x10D0E57C9FC0
• Base-36: 6JXWP28CG

Squares and roots of 18489389391808

• 18489389391808 squared (18489389391808²) is 341857520081902204137508864
• 18489389391808 cubed (18489389391808³) is 6320736805312112940505749676153168986112
• The square root of 18489389391808 is 4299928.9984612537
• The cube root of 18489389391808 is 26442.8050378279

Scales and comparisons

• 18,489,389,391,808 seconds is equal to 587,905 years, 20 weeks, 2 days, 9 hours, 43 minutes, 28 seconds.
• To count from 1 to 18,489,389,391,808 would take you about one million, four hundred sixty-nine thousand, seven hundred sixty-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 18489389391808 cubic inches would be around 2203.6 feet tall.

Recreational maths with 18489389391808

• 18489389391808 backwards is 80819398398481
• The number of decimal digits it has is: 14
• The sum of 18489389391808's digits is 79
• More coming soon!