18790042792707729

Names of 18790042792707729

• Cardinal: 18790042792707729 can be written as Eighteen quadrillion, seven hundred ninety trillion, forty-two billion, seven hundred ninety-two million, seven hundred seven thousand, seven hundred twenty-nine.

Scientific notation

• Scientific notation: 1.8790042792707729 × 10¹⁶

Factors of 18790042792707729

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 63969

Divisors of 18790042792707729

• Number of divisors d(n): 45
• Complete list of divisors:
  1 3 9 27 81 239 717 2151 6453 19359 57121 63727 171363 191181 514089 573543 1542267 1720629 4626801 5161887 15230753 45692259 137076777 411230331 1233690993 3640149967 4061130529 10920449901 12183391587 32761349703 36550174761 98284049109 109650524283 294852147327 328951572849 970610196431 2911830589293 8735491767879 26206475303637 78619425910911 231975836947009 695927510841027 2087782532523081 6263347597569243 18790042792707729
• Sum of all divisors σ(n): 28187453816869017
• Sum of proper divisors (its aliquot sum) s(n): 9397411024161288
• 18790042792707729 is a deficient number, because the sum of its proper divisors (9397411024161288) is less than itself. Its deficiency is 9392631768546441

Bases of 18790042792707729

• Binary: 1000010110000010111000111000001111110010100011010010001₂
• Hexadecimal: 0x42C171C1F94691
• Base-36: 550IIHQ9029

Squares and roots of 18790042792707729

• 18790042792707729 squared (18790042792707729²) is 353065708151787671654779616337441
• 18790042792707729 cubed (18790042792707729³) is 6634119764809748422255910979382424224866152781489
• 18790042792707729 is a perfect square number. Its square root is 137076777
• The cube root of 18790042792707729 is 265853.6270123269

Scales and comparisons

• 18,790,042,792,707,729 seconds is equal to 597,465,239 years, 20 weeks, 1 day, 19 hours, 42 minutes, 9 seconds.
• To count from 1 to 18,790,042,792,707,729 would take you about one billion, seven hundred ninety-two million, three hundred ninety-five thousand, seven hundred eighteen 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 18790042792707729 cubic inches would be around 22154.5 feet tall.

Recreational maths with 18790042792707729

• 18790042792707729 backwards is 92770729724009781
• 18790042792707729 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 18790042792707729's digits is 81
• More coming soon!