18438193341515649840

Names of 18438193341515649840

• Cardinal: 18438193341515649840 can be written as Eighteen quintillion, four hundred thirty-eight quadrillion, one hundred ninety-three trillion, three hundred forty-one billion, five hundred fifteen million, six hundred forty-nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.843819334151564984 × 10¹⁹

Factors of 18438193341515649840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 76825805589648551

Divisors of 18438193341515649840

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 76825805589648541 153651611179297082 230477416768945623 307303222358594164 384129027948242705 460954833537891246 614606444717188328 768258055896485410 921909667075782492 1152387083844728115 1229212889434376656 1536516111792970820 1843819334151564984 2304774167689456230 3073032223585941640 3687638668303129968 4609548335378912460 6146064447171883280 9219096670757824920 18438193341515649840
• Sum of all divisors σ(n): 57158399358698515248
• Sum of proper divisors (its aliquot sum) s(n): 38720206017182865408
• 18438193341515649840 is an abundant number, because the sum of its proper divisors (38720206017182865408) is greater than itself. Its abundance is 20282012675667215568

Bases of 18438193341515649840

• Binary: 1111111111100001100111110010011110000101000000110101001100110000₂
• Hexadecimal: 0xFFE19F2785035330
• Base-36: 3W31U1Q11WK6O

Squares and roots of 18438193341515649840

• 18438193341515649840 squared (18438193341515649840²) is 339966973699112045173617325637492025600
• 18438193341515649840 cubed (18438193341515649840³) is 6268376790794193764526313496687282592544722190601915904000
• The square root of 18438193341515649840 is 4293971744.3778842173
• The cube root of 18438193341515649840 is 2641837.6277191989

Scales and comparisons

• 18,438,193,341,515,649,840 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 18,438,193,341,515,649,840 would take you about two hundred ninety-three billion, two hundred seventy-four million, seven hundred one thousand and nine 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 18438193341515649840 cubic inches would be around 220153.1 feet tall.

Recreational maths with 18438193341515649840

• 18438193341515649840 backwards is 04894651514339183481
• The number of decimal digits it has is: 20
• The sum of 18438193341515649840's digits is 87
• More coming soon!