18990340551

Names of 18990340551

• Cardinal: 18990340551 can be written as Eighteen billion, nine hundred ninety million, three hundred forty thousand, five hundred fifty-one.

Scientific notation

• Scientific notation: 1.8990340551 × 10¹⁰

Factors of 18990340551

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2809

Divisors of 18990340551

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 7 9 13 21 39 63 91 117 169 273 507 819 997 1183 1521 1789 2991 3549 5367 6979 8973 10647 12523 12961 16101 20937 23257 37569 38883 62811 69771 90727 112707 116649 162799 168493 209313 272181 302341 488397 505479 816543 907023 1179451 1465191 1516437 1783633 2116387 2721069 3538353 5350899 6349161 10615059 12485431 16052697 19047483 23187229 37456293 69561687 112368879 162310603 208685061 301433977 486931809 904301931 1460795427 2110037839 2712905793 6330113517 18990340551
• Sum of all divisors σ(n): 33999145440
• Sum of proper divisors (its aliquot sum) s(n): 15008804889
• 18990340551 is a deficient number, because the sum of its proper divisors (15008804889) is less than itself. Its deficiency is 3981535662

Bases of 18990340551

• Binary: 10001101011111010011001100111000111₂
• Hexadecimal: 0x46BE999C7
• Base-36: 8Q2CWJR

Squares and roots of 18990340551

• 18990340551 squared (18990340551²) is 360633034242954983601
• 18990340551 cubed (18990340551³) is 6848544134214159611145610304151
• The square root of 18990340551 is 137805.4445622525
• The cube root of 18990340551 is 2667.9493740051

Scales and comparisons

• 18,990,340,551 seconds is equal to 603 years, 43 weeks, 2 days, 14 hours, 35 minutes, 51 seconds.
• To count from 1 to 18,990,340,551 would take you about one thousand, two hundred 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 18990340551 cubic inches would be around 222.3 feet tall.

Recreational maths with 18990340551

• 18990340551 backwards is 15504309981
• The number of decimal digits it has is: 11
• The sum of 18990340551's digits is 45
• More coming soon!