18108494208 has 96 divisors (see below), whose sum is σ = 59553258960. Its totient is φ = 5173853184.

The previous prime is 18108494171. The next prime is 18108494213. The reversal of 18108494208 is 80249480181.

18108494208 is a `hidden beast` number, since 181 + 0 + 8 + 49 + 420 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1114735 + ... + 1130862.

Almost surely, 2^18108494208 is an apocalyptic number.

18108494208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18108494208 is an abundant number, since it is smaller than the sum of its proper divisors (41444764752).

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

18108494208 is a wasteful number, since it uses less digits than its factorization.

18108494208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245624 (or 2245609 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The spelling of 18108494208 in words is "eighteen billion, one hundred eight million, four hundred ninety-four thousand, two hundred eight".