904593368513 has 2 divisors, whose sum is σ = 904593368514. Its totient is φ = 904593368512.

The previous prime is 904593368479. The next prime is 904593368519. The reversal of 904593368513 is 315863395409.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 869690535184 + 34902833329 = 932572^2 + 186823^2 .

It is a cyclic number.

It is not a de Polignac number, because 904593368513 - 2¹⁴ = 904593352129 is a prime.

It is not a weakly prime, because it can be changed into another prime (904593368519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452296684256 + 452296684257.

It is an arithmetic number, because the mean of its divisors is an integer number (452296684257).

Almost surely, 2^904593368513 is an apocalyptic number.

It is an amenable number.

904593368513 is a deficient number, since it is larger than the sum of its proper divisors (1).

904593368513 is an equidigital number, since it uses as much as digits as its factorization.

904593368513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10497600, while the sum is 56.

The spelling of 904593368513 in words is "nine hundred four billion, five hundred ninety-three million, three hundred sixty-eight thousand, five hundred thirteen".