1,820,813 is a prime number. Like all primes greater than two, it is odd and has no factors apart from itself and one.

What does the number 1820813 look like?

As a prime, it is not composed of any other numbers and has no internal structure.

1820813 is a prime number. Like all primes (except two), it is an odd number.

Prime factorization of 1820813:


See below for interesting mathematical facts about the number 1820813 from the Numbermatics database.

Names of 1820813

  • Cardinal: 1820813 can be written as One million, eight hundred twenty thousand, eight hundred thirteen.

Scientific notation

  • Scientific notation: 1.820813 × 106

Factors of 1820813

  • Number of distinct prime factors ω(n): 1
  • Total number of prime factors Ω(n): 1
  • Sum of prime factors: 1820813

Divisors of 1820813

  • Number of divisors d(n): 2
  • Complete list of divisors:
  • Sum of all divisors σ(n): 1820814
  • Sum of proper divisors (its aliquot sum) s(n): 1
  • 1820813 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 1820812

Bases of 1820813

  • Binary: 1101111001000100011012
  • Hexadecimal: 0x1BC88D
  • Base-36: 130Y5

Squares and roots of 1820813

  • 1820813 squared (18208132) is 3315359980969
  • 1820813 cubed (18208133) is 6036650553028107797
  • The square root of 1820813 is 1349.3750405281
  • The cube root of 1820813 is 122.1110920375

Scales and comparisons

How big is 1820813?
  • 1,820,813 seconds is equal to 3 weeks, 1 hour, 46 minutes, 53 seconds.
  • To count from 1 to 1,820,813 would take you about four weeks!

    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 1820813 cubic inches would be around 10.2 feet tall.

Recreational maths with 1820813

  • 1820813 backwards is 3180281
  • The number of decimal digits it has is: 7
  • The sum of 1820813's digits is 23
  • More coming soon!

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The information we have on file for 1820813 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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