18658082808 has 64 divisors (see below), whose sum is σ = 52029828000. Its totient is φ = 6195142656.

The previous prime is 18658082791. The next prime is 18658082827. The reversal of 18658082808 is 80828085681.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112543 + ... + 223566.

Almost surely, 2^18658082808 is an apocalyptic number.

18658082808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18658082808 is an abundant number, since it is smaller than the sum of its proper divisors (33371745192).

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

18658082808 is a wasteful number, since it uses less digits than its factorization.

18658082808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336381 (or 336371 counting only the distinct ones).

The product of its (nonzero) digits is 1966080, while the sum is 54.

The spelling of 18658082808 in words is "eighteen billion, six hundred fifty-eight million, eighty-two thousand, eight hundred eight".