12918809189

Names of 12918809189

• Cardinal: 12918809189 can be written as Twelve billion, nine hundred eighteen million, eight hundred nine thousand, one hundred eighty-nine.

Scientific notation

• Scientific notation: 1.2918809189 × 10¹⁰

Factors of 12918809189

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 498

Divisors of 12918809189

• Number of divisors d(n): 64
• Complete list of divisors:
  1 11 13 43 71 127 143 233 473 559 781 923 1397 1651 2563 3029 3053 5461 6149 9017 10019 10153 16543 18161 29591 33319 33583 39689 60071 70993 99187 110209 117221 130247 181973 215059 325501 384683 387731 436579 711349 780923 1272413 1289431 1432717 2100961 2365649 4231513 4265041 5040503 7824839 9247537 13996543 16541369 23110571 27312493 55445533 90341323 101722907 181955059 300437423 993754553 1174437199 12918809189
• Sum of all divisors σ(n): 15941173248
• Sum of proper divisors (its aliquot sum) s(n): 3022364059
• 12918809189 is a deficient number, because the sum of its proper divisors (3022364059) is less than itself. Its deficiency is 9896445130

Bases of 12918809189

• Binary: 1100000010000001010110001001100101₂
• Hexadecimal: 0x302056265
• Base-36: 5XNIWYT

Squares and roots of 12918809189

• 12918809189 squared (12918809189²) is 166895630861790837721
• 12918809189 cubed (12918809189³) is 2156092809581255463346062618269
• The square root of 12918809189 is 113660.9395922803
• The cube root of 12918809189 is 2346.4294162421

Scales and comparisons

• 12,918,809,189 seconds is equal to 410 years, 40 weeks, 3 days, 6 hours, 6 minutes, 29 seconds.
• To count from 1 to 12,918,809,189 would take you about eight hundred twenty-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 12918809189 cubic inches would be around 195.5 feet tall.

Recreational maths with 12918809189

• 12918809189 backwards is 98190881921
• The number of decimal digits it has is: 11
• The sum of 12918809189's digits is 56
• More coming soon!