368040391 has 2 divisors, whose sum is σ = 368040392. Its totient is φ = 368040390.

The previous prime is 368040349. The next prime is 368040437. The reversal of 368040391 is 193040863.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 368040391 - 2⁹ = 368039879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (368040301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184020195 + 184020196.

It is an arithmetic number, because the mean of its divisors is an integer number (184020196).

Almost surely, 2^368040391 is an apocalyptic number.

368040391 is a deficient number, since it is larger than the sum of its proper divisors (1).

368040391 is an equidigital number, since it uses as much as digits as its factorization.

368040391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 368040391 is about 19184.3788275774. The cubic root of 368040391 is about 716.6357911583.

The spelling of 368040391 in words is "three hundred sixty-eight million, forty thousand, three hundred ninety-one".