2564535630 has 32 divisors (see below), whose sum is σ = 6156288000. Its totient is φ = 683720352.

The previous prime is 2564535619. The next prime is 2564535643. The reversal of 2564535630 is 365354652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193971 + ... + 206769.

It is an arithmetic number, because the mean of its divisors is an integer number (192384000).

Almost surely, 2^2564535630 is an apocalyptic number.

2564535630 is an abundant number, since it is smaller than the sum of its proper divisors (3591752370).

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

2564535630 is a wasteful number, since it uses less digits than its factorization.

2564535630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19488.

The product of its (nonzero) digits is 324000, while the sum is 39.

The square root of 2564535630 is about 50641.2443567494. The cubic root of 2564535630 is about 1368.7881784142.

The spelling of 2564535630 in words is "two billion, five hundred sixty-four million, five hundred thirty-five thousand, six hundred thirty".