18173646484 has 12 divisors (see below), whose sum is σ = 36347293024. Its totient is φ = 7788705624.

The previous prime is 18173646467. The next prime is 18173646497. The reversal of 18173646484 is 48464637181.

18173646484 is an admirable number.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324529374 + ... + 324529429.

Almost surely, 2^18173646484 is an apocalyptic number.

18173646484 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18173646484 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.

18173646484 is a wasteful number, since it uses less digits than its factorization.

18173646484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649058814 (or 649058812 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 52.

The spelling of 18173646484 in words is "eighteen billion, one hundred seventy-three million, six hundred forty-six thousand, four hundred eighty-four".