1218958020

Names of 1218958020

• Cardinal: 1218958020 can be written as One billion, two hundred eighteen million, nine hundred fifty-eight thousand and twenty.

Scientific notation

• Scientific notation: 1.21895802 × 10⁹

Factors of 1218958020

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 967444

Divisors of 1218958020

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 28 30 35 36 42 45 60 63 70 84 90 105 126 140 180 210 252 315 420 630 1260 967427 1934854 2902281 3869708 4837135 5804562 6771989 8706843 9674270 11609124 13543978 14511405 17413686 19348540 20315967 27087956 29022810 33859945 34827372 40631934 43534215 58045620 60947901 67719890 81263868 87068430 101579835 121895802 135439780 174136860 203159670 243791604 304739505 406319340 609479010 1218958020
• Sum of all divisors σ(n): 4225725504
• Sum of proper divisors (its aliquot sum) s(n): 3006767484
• 1218958020 is an abundant number, because the sum of its proper divisors (3006767484) is greater than itself. Its abundance is 1787809464

Bases of 1218958020

• Binary: 1001000101001111101001011000100₂
• Hexadecimal: 0x48A7D2C4
• Base-36: K5QI10

Squares and roots of 1218958020

• 1218958020 squared (1218958020²) is 1485858654522320400
• 1218958020 cubed (1218958020³) is 1811199323516391720589608000
• The square root of 1218958020 is 34913.5793066251
• The cube root of 1218958020 is 1068.2254395115

Scales and comparisons

• 1,218,958,020 seconds is equal to 38 years, 39 weeks, 3 days, 7 hours, 27 minutes.
• To count from 1 to 1,218,958,020 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 1218958020 cubic inches would be around 89 feet tall.

Recreational maths with 1218958020

• 1218958020 backwards is 0208598121
• 1218958020 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1218958020's digits is 36
• More coming soon!