2557189964 has 12 divisors (see below), whose sum is σ = 5114379984. Its totient is φ = 1095938544.

The previous prime is 2557189949. The next prime is 2557190011. The reversal of 2557189964 is 4699817552.

2557189964 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 45664079 + ... + 45664134.

It is an arithmetic number, because the mean of its divisors is an integer number (426198332).

Almost surely, 2^2557189964 is an apocalyptic number.

It is an amenable number.

2557189964 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2557189964 is a wasteful number, since it uses less digits than its factorization.

2557189964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91328224 (or 91328222 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 56.

The square root of 2557189964 is about 50568.6658317184. The cubic root of 2557189964 is about 1367.4800434686.

The spelling of 2557189964 in words is "two billion, five hundred fifty-seven million, one hundred eighty-nine thousand, nine hundred sixty-four".