2013646257 has 16 divisors (see below), whose sum is σ = 3409348480. Its totient is φ = 1150654896.

The previous prime is 2013646253. The next prime is 2013646273. The reversal of 2013646257 is 7526463102.

2013646257 is a `hidden beast` number, since 2 + 0 + 1 + 3 + 646 + 2 + 5 + 7 = 666.

It is not a de Polignac number, because 2013646257 - 2² = 2013646253 is a prime.

It is a super-2 number, since 2×2013646257² = 8109542496660220098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2013646253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5326918 + ... + 5327295.

It is an arithmetic number, because the mean of its divisors is an integer number (213084280).

Almost surely, 2^2013646257 is an apocalyptic number.

2013646257 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2013646257 is a deficient number, since it is larger than the sum of its proper divisors (1395702223).

2013646257 is a wasteful number, since it uses less digits than its factorization.

2013646257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10654229 (or 10654223 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 2013646257 is about 44873.6699747190. The cubic root of 2013646257 is about 1262.7800915923.

The spelling of 2013646257 in words is "two billion, thirteen million, six hundred forty-six thousand, two hundred fifty-seven".