3644872957 has 16 divisors (see below), whose sum is σ = 4138458624. Its totient is φ = 3206596800.

The previous prime is 3644872937. The next prime is 3644872967. The reversal of 3644872957 is 7592784463.

3644872957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3644872957 - 2²³ = 3636484349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3644872898 and 3644872907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644872937) 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, 2908 + ... + 85429.

It is an arithmetic number, because the mean of its divisors is an integer number (258653664).

Almost surely, 2^3644872957 is an apocalyptic number.

It is an amenable number.

3644872957 is a deficient number, since it is larger than the sum of its proper divisors (493585667).

3644872957 is an equidigital number, since it uses as much as digits as its factorization.

3644872957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88401 (or 88379 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 55.

The square root of 3644872957 is about 60372.7832470891. The cubic root of 3644872957 is about 1538.9604719269.

The spelling of 3644872957 in words is "three billion, six hundred forty-four million, eight hundred seventy-two thousand, nine hundred fifty-seven".