18336998808 has 64 divisors (see below), whose sum is σ = 50962572000. Its totient is φ = 6109157376.

The previous prime is 18336998807. The next prime is 18336998843. The reversal of 18336998808 is 80889963381.

18336998808 is a `hidden beast` number, since 183 + 369 + 98 + 8 + 0 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18336998803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414628 + ... + 456716.

Almost surely, 2^18336998808 is an apocalyptic number.

18336998808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18336998808 is an abundant number, since it is smaller than the sum of its proper divisors (32625573192).

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

18336998808 is a wasteful number, since it uses less digits than its factorization.

18336998808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44121 (or 44111 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 63.

The spelling of 18336998808 in words is "eighteen billion, three hundred thirty-six million, nine hundred ninety-eight thousand, eight hundred eight".