3643995331 has 2 divisors, whose sum is σ = 3643995332. Its totient is φ = 3643995330.

The previous prime is 3643995307. The next prime is 3643995359. The reversal of 3643995331 is 1335993463.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3643995331 is a prime.

It is a super-2 number, since 2×3643995331² = 26557403944699599122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3643995371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1821997665 + 1821997666.

It is an arithmetic number, because the mean of its divisors is an integer number (1821997666).

Almost surely, 2^3643995331 is an apocalyptic number.

3643995331 is a deficient number, since it is larger than the sum of its proper divisors (1).

3643995331 is an equidigital number, since it uses as much as digits as its factorization.

3643995331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 787320, while the sum is 46.

The square root of 3643995331 is about 60365.5144184161. The cubic root of 3643995331 is about 1538.8369431458.

The spelling of 3643995331 in words is "three billion, six hundred forty-three million, nine hundred ninety-five thousand, three hundred thirty-one".