2564164738 has 8 divisors (see below), whose sum is σ = 3846503232. Its totient is φ = 1281996996.

The previous prime is 2564164727. The next prime is 2564164739. The reversal of 2564164738 is 8374614652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2564164739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5931 + ... + 71857.

It is an arithmetic number, because the mean of its divisors is an integer number (480812904).

Almost surely, 2^2564164738 is an apocalyptic number.

2564164738 is a deficient number, since it is larger than the sum of its proper divisors (1282338494).

2564164738 is a wasteful number, since it uses less digits than its factorization.

2564164738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85376.

The product of its digits is 967680, while the sum is 46.

The square root of 2564164738 is about 50637.5822685088. The cubic root of 2564164738 is about 1368.7221889417.

The spelling of 2564164738 in words is "two billion, five hundred sixty-four million, one hundred sixty-four thousand, seven hundred thirty-eight".