808957613 has 2 divisors, whose sum is σ = 808957614. Its totient is φ = 808957612.

The previous prime is 808957607. The next prime is 808957637. The reversal of 808957613 is 316759808.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 668843044 + 140114569 = 25862^2 + 11837^2 .

It is a cyclic number.

It is not a de Polignac number, because 808957613 - 2⁶ = 808957549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808957213) 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, 404478806 + 404478807.

It is an arithmetic number, because the mean of its divisors is an integer number (404478807).

Almost surely, 2^808957613 is an apocalyptic number.

It is an amenable number.

808957613 is a deficient number, since it is larger than the sum of its proper divisors (1).

808957613 is an equidigital number, since it uses as much as digits as its factorization.

808957613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 808957613 is about 28442.1801731161. The cubic root of 808957613 is about 931.7697111493.

The spelling of 808957613 in words is "eight hundred eight million, nine hundred fifty-seven thousand, six hundred thirteen".