2564672187 has 16 divisors (see below), whose sum is σ = 4263351552. Its totient is φ = 1332297120.

The previous prime is 2564672179. The next prime is 2564672203. The reversal of 2564672187 is 7812764652.

It is not a de Polignac number, because 2564672187 - 2³ = 2564672179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2564672137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5551008 + ... + 5551469.

It is an arithmetic number, because the mean of its divisors is an integer number (266459472).

Almost surely, 2^2564672187 is an apocalyptic number.

2564672187 is a deficient number, since it is larger than the sum of its proper divisors (1698679365).

2564672187 is a wasteful number, since it uses less digits than its factorization.

2564672187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11102498.

The product of its digits is 1128960, while the sum is 48.

The square root of 2564672187 is about 50642.5926172821. The cubic root of 2564672187 is about 1368.8124731686.

The spelling of 2564672187 in words is "two billion, five hundred sixty-four million, six hundred seventy-two thousand, one hundred eighty-seven".