3644376165 has 16 divisors (see below), whose sum is σ = 6478891200. Its totient is φ = 1943667216.

The previous prime is 3644376163. The next prime is 3644376181. The reversal of 3644376165 is 5616734463.

It is not a de Polignac number, because 3644376165 - 2¹ = 3644376163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 3644376165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644376163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13497555 + ... + 13497824.

It is an arithmetic number, because the mean of its divisors is an integer number (404930700).

Almost surely, 2^3644376165 is an apocalyptic number.

It is an amenable number.

3644376165 is a deficient number, since it is larger than the sum of its proper divisors (2834515035).

3644376165 is a wasteful number, since it uses less digits than its factorization.

3644376165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26995393 (or 26995387 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 45.

The square root of 3644376165 is about 60368.6687363569. The cubic root of 3644376165 is about 1538.8905492347.

The spelling of 3644376165 in words is "three billion, six hundred forty-four million, three hundred seventy-six thousand, one hundred sixty-five".