3664641157 has 4 divisors (see below), whose sum is σ = 3665113920. Its totient is φ = 3664168396.

The previous prime is 3664641151. The next prime is 3664641191. The reversal of 3664641157 is 7511464663.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3664641157 - 2²³ = 3656252549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3664641151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224557 + ... + 240322.

It is an arithmetic number, because the mean of its divisors is an integer number (916278480).

Almost surely, 2^3664641157 is an apocalyptic number.

It is an amenable number.

3664641157 is a deficient number, since it is larger than the sum of its proper divisors (472763).

3664641157 is an equidigital number, since it uses as much as digits as its factorization.

3664641157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472762.

The product of its digits is 362880, while the sum is 43.

The square root of 3664641157 is about 60536.2796759100. The cubic root of 3664641157 is about 1541.7376738089.

The spelling of 3664641157 in words is "three billion, six hundred sixty-four million, six hundred forty-one thousand, one hundred fifty-seven".