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2680031813 = 8936782051
BaseRepresentation
bin1001111110111110…
…0000101001000101
320220202221201111112
42133233200221011
520442042004223
61121534214405
7123261615554
oct23757405105
96822851445
102680031813
111155898628
12629654405
13339314954
141b5d15d9b
1510a43d778
hex9fbe0a45

2680031813 has 8 divisors (see below), whose sum is σ = 2717562240. Its totient is φ = 2642666400.

The previous prime is 2680031801. The next prime is 2680031831. The reversal of 2680031813 is 3181300862.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2680031813 - 230 = 1606289989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2680031813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2680031843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8363 + ... + 73688.

It is an arithmetic number, because the mean of its divisors is an integer number (339695280).

Almost surely, 22680031813 is an apocalyptic number.

It is an amenable number.

2680031813 is a deficient number, since it is larger than the sum of its proper divisors (37530427).

2680031813 is an equidigital number, since it uses as much as digits as its factorization.

2680031813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82507.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 2680031813 is about 51769.0236821210. The cubic root of 2680031813 is about 1389.0354077550.

The spelling of 2680031813 in words is "two billion, six hundred eighty million, thirty-one thousand, eight hundred thirteen".

Divisors: 1 89 367 32663 82051 7302539 30112717 2680031813