604195391 has 2 divisors, whose sum is σ = 604195392. Its totient is φ = 604195390.

The previous prime is 604195379. The next prime is 604195409. The reversal of 604195391 is 193591406.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 604195391 - 2⁶ = 604195327 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (604195321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302097695 + 302097696.

It is an arithmetic number, because the mean of its divisors is an integer number (302097696).

Almost surely, 2^604195391 is an apocalyptic number.

604195391 is a deficient number, since it is larger than the sum of its proper divisors (1).

604195391 is an equidigital number, since it uses as much as digits as its factorization.

604195391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 604195391 is about 24580.3863069725. The cubic root of 604195391 is about 845.3939509651.

The spelling of 604195391 in words is "six hundred four million, one hundred ninety-five thousand, three hundred ninety-one".