1380945821

Names of 1380945821

• Cardinal: 1380945821 can be written as One billion, three hundred eighty million, nine hundred forty-five thousand, eight hundred twenty-one.

Scientific notation

• Scientific notation: 1.380945821 × 10⁹

Factors of 1380945821

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 72681378

Divisors of 1380945821

• Number of divisors d(n): 4
• Complete list of divisors:
  1 19 72681359 1380945821
• Sum of all divisors σ(n): 1453627200
• Sum of proper divisors (its aliquot sum) s(n): 72681379
• 1380945821 is a deficient number, because the sum of its proper divisors (72681379) is less than itself. Its deficiency is 1308264442

Bases of 1380945821

• Binary: 1010010010011111000111110011101₂
• Hexadecimal: 0x524F8F9D
• Base-36: MU6GM5

Squares and roots of 1380945821

• 1380945821 squared (1380945821²) is 1907011360537364041
• 1380945821 cubed (1380945821³) is 2633479368933597186774622661
• The square root of 1380945821 is 37161.0793842159
• The cube root of 1380945821 is 1113.5905753265

Scales and comparisons

• 1,380,945,821 seconds is equal to 43 years, 47 weeks, 2 days, 4 hours, 3 minutes, 41 seconds.
• To count from 1 to 1,380,945,821 would take you about eighty-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 1380945821 cubic inches would be around 92.8 feet tall.

Recreational maths with 1380945821

• 1380945821 backwards is 1285490831
• The number of decimal digits it has is: 10
• The sum of 1380945821's digits is 41
• More coming soon!