808317138 has 8 divisors (see below), whose sum is σ = 1616634288. Its totient is φ = 269439044.

The previous prime is 808317127. The next prime is 808317149. The reversal of 808317138 is 831713808.

It is an interprime number because it is at equal distance from previous prime (808317127) and next prime (808317149).

It is a sphenic number, since it is the product of 3 distinct primes.

808317138 is an admirable number.

It is a super-2 number, since 2×808317138² = 1306753191169022088, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 808317096 and 808317105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67359756 + ... + 67359767.

It is an arithmetic number, because the mean of its divisors is an integer number (202079286).

Almost surely, 2^808317138 is an apocalyptic number.

808317138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

808317138 is a wasteful number, since it uses less digits than its factorization.

808317138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134719528.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 808317138 is about 28430.9186977839. The cubic root of 808317138 is about 931.5237432683.

The spelling of 808317138 in words is "eight hundred eight million, three hundred seventeen thousand, one hundred thirty-eight".