1638727345365438

Names of 1638727345365438

• Cardinal: 1638727345365438 can be written as One quadrillion, six hundred thirty-eight trillion, seven hundred twenty-seven billion, three hundred forty-five million, three hundred sixty-five thousand, four hundred thirty-eight.

Scientific notation

• Scientific notation: 1.638727345365438 × 10¹⁵

Factors of 1638727345365438

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 3324

Divisors of 1638727345365438

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 6 349 698 1047 1093 1877 2094 2186 3279 3754 5631 6558 11262 121801 243602 365403 381457 655073 730806 762914 1144371 1194649 1310146 1965219 2051561 2288742 2389298 3583947 3930438 4103122 6154683 7167894 12309366 133128493 228620477 266256986 399385479 416932501 457240954 685861431 715994789 798770958 833865002 1250797503 1371722862 1431989578 2147984367 2242356173 2501595006 4295968734 4484712346 6727068519 13454137038 145509442849 249882181361 291018885698 436528328547 499764362722 749646544083 782582304377 873056657094 1499293088166 1565164608754 2347746913131 4695493826262 273121224227573 546242448455146 819363672682719 1638727345365438
• Sum of all divisors σ(n): 3291635275157448
• Sum of proper divisors (its aliquot sum) s(n): 1652907929792010
• 1638727345365438 is an abundant number, because the sum of its proper divisors (1652907929792010) is greater than itself. Its abundance is 14180584426572

Bases of 1638727345365438

• Binary: 101110100100110100111110001010011011110000110111110₂
• Hexadecimal: 0x5D269F14DE1BE
• Base-36: G4VOY6QSOU

Squares and roots of 1638727345365438

• 1638727345365438 squared (1638727345365438²) is 2685427312448455512137764931844
• 1638727345365438 cubed (1638727345365438³) is 4400683170900500136962673486439424615343207672
• The square root of 1638727345365438 is 40481197.4299851709
• The cube root of 1638727345365438 is 117896.8586747965

Scales and comparisons

• 1,638,727,345,365,438 seconds is equal to 52,106,460 years, 34 weeks, 4 days, 11 hours, 17 minutes, 18 seconds.
• To count from 1 to 1,638,727,345,365,438 would take you about one hundred fifty-six million, three hundred nineteen thousand, three hundred eighty-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 1638727345365438 cubic inches would be around 9824.7 feet tall.

Recreational maths with 1638727345365438

• 1638727345365438 backwards is 8345635437278361
• The number of decimal digits it has is: 16
• The sum of 1638727345365438's digits is 75
• More coming soon!