818438808 has 64 divisors (see below), whose sum is σ = 2329171200. Its totient is φ = 237226880.

The previous prime is 818438807. The next prime is 818438809. The reversal of 818438808 is 808834818.

It is an interprime number because it is at equal distance from previous prime (818438807) and next prime (818438809).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818438801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61323 + ... + 73466.

It is an arithmetic number, because the mean of its divisors is an integer number (36393300).

Almost surely, 2^818438808 is an apocalyptic number.

818438808 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

818438808 is an abundant number, since it is smaller than the sum of its proper divisors (1510732392).

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

818438808 is a wasteful number, since it uses less digits than its factorization.

818438808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134832 (or 134828 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 48.

The square root of 818438808 is about 28608.3695445931. The cubic root of 818438808 is about 935.3957766651.

The spelling of 818438808 in words is "eight hundred eighteen million, four hundred thirty-eight thousand, eight hundred eight".