382612991 has 2 divisors, whose sum is σ = 382612992. Its totient is φ = 382612990.

The previous prime is 382612987. The next prime is 382613003. The reversal of 382612991 is 199216283.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 382612991 - 2² = 382612987 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (382612961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191306495 + 191306496.

It is an arithmetic number, because the mean of its divisors is an integer number (191306496).

Almost surely, 2^382612991 is an apocalyptic number.

382612991 is a deficient number, since it is larger than the sum of its proper divisors (1).

382612991 is an equidigital number, since it uses as much as digits as its factorization.

382612991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 41.

The square root of 382612991 is about 19560.4956736786. The cubic root of 382612991 is about 725.9720554526.

The spelling of 382612991 in words is "three hundred eighty-two million, six hundred twelve thousand, nine hundred ninety-one".