2545604164 has 18 divisors (see below), whose sum is σ = 4522321230. Its totient is φ = 1253796192.

The previous prime is 2545604141. The next prime is 2545604167. The reversal of 2545604164 is 4614065452.

It can be written as a sum of positive squares in only one way, i.e., 2366044164 + 179560000 = 48642^2 + 13400^2 .

It is not an unprimeable number, because it can be changed into a prime (2545604167) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 52929 + ... + 88840.

Almost surely, 2^2545604164 is an apocalyptic number.

It is an amenable number.

2545604164 is a deficient number, since it is larger than the sum of its proper divisors (1976717066).

2545604164 is a wasteful number, since it uses less digits than its factorization.

2545604164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141907 (or 141838 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The square root of 2545604164 is about 50453.9806556430. The cubic root of 2545604164 is about 1365.4117135245.

The spelling of 2545604164 in words is "two billion, five hundred forty-five million, six hundred four thousand, one hundred sixty-four".