1218140536

Names of 1218140536

• Cardinal: 1218140536 can be written as One billion, two hundred eighteen million, one hundred forty thousand, five hundred thirty-six.

Scientific notation

• Scientific notation: 1.218140536 × 10⁹

Factors of 1218140536

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 139

Divisors of 1218140536

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 8 23 31 46 62 83 92 124 166 184 248 332 664 713 961 1426 1909 1922 2573 2852 3818 3844 5146 5704 6889 7636 7688 10292 13778 15272 20584 22103 27556 44206 55112 59179 79763 88412 118358 158447 159526 176824 213559 236716 316894 319052 427118 473432 633788 638104 854236 1267576 1708472 1834549 3669098 4911857 6620329 7338196 9823714 13240658 14676392 19647428 26481316 39294856 52962632 152267567 304535134 609070268 1218140536
• Sum of all divisors σ(n): 2492708040
• Sum of proper divisors (its aliquot sum) s(n): 1274567504
• 1218140536 is an abundant number, because the sum of its proper divisors (1274567504) is greater than itself. Its abundance is 56426968

Bases of 1218140536

• Binary: 1001000100110110101100101111000₂
• Hexadecimal: 0x489B5978
• Base-36: K58Z94

Squares and roots of 1218140536

• 1218140536 squared (1218140536²) is 1483866365446367296
• 1218140536 cubed (1218140536³) is 1807557769757209737202310656
• The square root of 1218140536 is 34901.8700931627
• The cube root of 1218140536 is 1067.9865872901

Scales and comparisons

• 1,218,140,536 seconds is equal to 38 years, 38 weeks, 20 hours, 22 minutes, 16 seconds.
• To count from 1 to 1,218,140,536 would take you about seventy-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 1218140536 cubic inches would be around 89 feet tall.

Recreational maths with 1218140536

• 1218140536 backwards is 6350418121
• 1218140536 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1218140536's digits is 31
• More coming soon!