2564046642 has 16 divisors (see below), whose sum is σ = 5293516032. Its totient is φ = 827111760.

The previous prime is 2564046631. The next prime is 2564046679. The reversal of 2564046642 is 2466404652.

2564046642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2564046642.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6892413 + ... + 6892784.

It is an arithmetic number, because the mean of its divisors is an integer number (330844752).

Almost surely, 2^2564046642 is an apocalyptic number.

2564046642 is an abundant number, since it is smaller than the sum of its proper divisors (2729469390).

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

2564046642 is a wasteful number, since it uses less digits than its factorization.

2564046642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13785233.

The product of its (nonzero) digits is 276480, while the sum is 39.

The square root of 2564046642 is about 50636.4161646537. The cubic root of 2564046642 is about 1368.7011758486.

The spelling of 2564046642 in words is "two billion, five hundred sixty-four million, forty-six thousand, six hundred forty-two".