18481692032 has 16 divisors (see below), whose sum is σ = 36818996100. Its totient is φ = 9240845952.

The previous prime is 18481692017. The next prime is 18481692043. The reversal of 18481692032 is 23029618481.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72193982 + ... + 72194237.

Almost surely, 2^18481692032 is an apocalyptic number.

It is an amenable number.

18481692032 is a deficient number, since it is larger than the sum of its proper divisors (18337304068).

18481692032 is an equidigital number, since it uses as much as digits as its factorization.

18481692032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144388233 (or 144388221 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 18481692032 in words is "eighteen billion, four hundred eighty-one million, six hundred ninety-two thousand, thirty-two".