18990995728671

Names of 18990995728671

• Cardinal: 18990995728671 can be written as Eighteen trillion, nine hundred ninety billion, nine hundred ninety-five million, seven hundred twenty-eight thousand, six hundred seventy-one.

Scientific notation

• Scientific notation: 1.8990995728671 × 10¹³

Factors of 18990995728671

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 17490

Divisors of 18990995728671

• Number of divisors d(n): 84
• Complete list of divisors:
  1 3 9 27 31 81 93 243 279 729 837 961 1723 2511 2883 5169 7533 8649 15507 15733 22599 25947 46521 47199 53413 77841 139563 141597 160239 233523 418689 424791 480717 487723 700569 1256067 1274373 1442151 1463169 1655803 3823119 4326453 4389507 4967409 11469357 12979359 13168521 14902227 15119413 27107959 38938077 39505563 44706681 45358239 81323877 118516689 134120043 136074717 243971631 355550067 402360129 408224151 731914893 840346729 1207080387 1224672453 2195744679 2521040187 3674017359 6587234037 7563120561 11022052077 19761702111 22689361683 26050748599 68068085049 78152245797 204204255147 234456737391 612612765441 703370212173 2110110636519 6330331909557 18990995728671
• Sum of all divisors σ(n): 29440543130184
• Sum of proper divisors (its aliquot sum) s(n): 10449547401513
• 18990995728671 is a deficient number, because the sum of its proper divisors (10449547401513) is less than itself. Its deficiency is 8541448327158

Bases of 18990995728671

• Binary: 100010100010110101111100011011110100100011111₂
• Hexadecimal: 0x1145AF8DE91F
• Base-36: 6QCCCIUXR

Squares and roots of 18990995728671

• 18990995728671 squared (18990995728671²) is 360657918766400166251426241
• 18990995728671 cubed (18990995728671³) is 6849252994804078050711580028292805455711
• The square root of 18990995728671 is 4357865.9603837059
• The cube root of 18990995728671 is 26679.8005558161

Scales and comparisons

• 18,990,995,728,671 seconds is equal to 603,854 years, 47 weeks, 6 days, 7 hours, 17 minutes, 51 seconds.
• To count from 1 to 18,990,995,728,671 would take you about one million, five hundred nine thousand, six hundred thirty-seven 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 18990995728671 cubic inches would be around 2223.3 feet tall.

Recreational maths with 18990995728671

• 18990995728671 backwards is 17682759909981
• 18990995728671 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 18990995728671's digits is 81
• More coming soon!