2564535166 has 16 divisors (see below), whose sum is σ = 3952198656. Its totient is φ = 1247462776.

The previous prime is 2564535161. The next prime is 2564535173. The reversal of 2564535166 is 6615354652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564535161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65986 + ... + 97381.

It is an arithmetic number, because the mean of its divisors is an integer number (247012416).

Almost surely, 2^2564535166 is an apocalyptic number.

2564535166 is a deficient number, since it is larger than the sum of its proper divisors (1387663490).

2564535166 is a wasteful number, since it uses less digits than its factorization.

2564535166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163583.

The product of its digits is 648000, while the sum is 43.

The square root of 2564535166 is about 50641.2397755031. The cubic root of 2564535166 is about 1368.7880958629.

The spelling of 2564535166 in words is "two billion, five hundred sixty-four million, five hundred thirty-five thousand, one hundred sixty-six".