3643557166 has 16 divisors (see below), whose sum is σ = 5689947024. Its totient is φ = 1748257344.

The previous prime is 3643557161. The next prime is 3643557179. The reversal of 3643557166 is 6617553463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3643557161) 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, 331840 + ... + 342643.

It is an arithmetic number, because the mean of its divisors is an integer number (355621689).

Almost surely, 2^3643557166 is an apocalyptic number.

3643557166 is a deficient number, since it is larger than the sum of its proper divisors (2046389858).

3643557166 is a wasteful number, since it uses less digits than its factorization.

3643557166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674595.

The product of its digits is 1360800, while the sum is 46.

The square root of 3643557166 is about 60361.8850434610. The cubic root of 3643557166 is about 1538.7752625402.

The spelling of 3643557166 in words is "three billion, six hundred forty-three million, five hundred fifty-seven thousand, one hundred sixty-six".