3644538164 has 12 divisors (see below), whose sum is σ = 6473135424. Its totient is φ = 1795070904.

The previous prime is 3644538151. The next prime is 3644538179. The reversal of 3644538164 is 4618354463.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6799244 + ... + 6799779.

It is an arithmetic number, because the mean of its divisors is an integer number (539427952).

Almost surely, 2^3644538164 is an apocalyptic number.

It is an amenable number.

3644538164 is a deficient number, since it is larger than the sum of its proper divisors (2828597260).

3644538164 is a wasteful number, since it uses less digits than its factorization.

3644538164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13599094 (or 13599092 counting only the distinct ones).

The product of its digits is 829440, while the sum is 44.

The square root of 3644538164 is about 60370.0104687750. The cubic root of 3644538164 is about 1538.9133510372.

The spelling of 3644538164 in words is "three billion, six hundred forty-four million, five hundred thirty-eight thousand, one hundred sixty-four".