18129343040

Names of 18129343040

• Cardinal: 18129343040 can be written as Eighteen billion, one hundred twenty-nine million, three hundred forty-three thousand and forty.

Scientific notation

• Scientific notation: 1.812934304 × 10¹⁰

Factors of 18129343040

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1953629

Divisors of 18129343040

• Number of divisors d(n): 56
• Complete list of divisors:
  1 2 4 5 8 10 16 20 29 32 40 58 64 80 116 145 160 232 290 320 464 580 928 1160 1856 2320 4640 9280 1953593 3907186 7814372 9767965 15628744 19535930 31257488 39071860 56654197 62514976 78143720 113308394 125029952 156287440 226616788 283270985 312574880 453233576 566541970 625149760 906467152 1133083940 1812934304 2266167880 3625868608 4532335760 9064671520 18129343040
• Sum of all divisors σ(n): 44659158840
• Sum of proper divisors (its aliquot sum) s(n): 26529815800
• 18129343040 is an abundant number, because the sum of its proper divisors (26529815800) is greater than itself. Its abundance is 8400472760

Bases of 18129343040

• Binary: 10000111000100101111101001001000000₂
• Hexadecimal: 0x43897D240
• Base-36: 8BTQQM8

Squares and roots of 18129343040

• 18129343040 squared (18129343040²) is 328673079061996441600
• 18129343040 cubed (18129343040³) is 5958626998327974917025726464000
• The square root of 18129343040 is 134645.2488578785
• The cube root of 18129343040 is 2627.0037267763

Scales and comparisons

• 18,129,343,040 seconds is equal to 576 years, 23 weeks, 5 days, 8 hours, 37 minutes, 20 seconds.
• To count from 1 to 18,129,343,040 would take you about one thousand, one hundred fifty-two 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 18129343040 cubic inches would be around 218.9 feet tall.

Recreational maths with 18129343040

• 18129343040 backwards is 04034392181
• The number of decimal digits it has is: 11
• The sum of 18129343040's digits is 35
• More coming soon!