18916473192 has 16 divisors (see below), whose sum is σ = 47291183040. Its totient is φ = 6305491056.

The previous prime is 18916473167. The next prime is 18916473299. The reversal of 18916473192 is 29137461981.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394093168 + ... + 394093215.

It is an arithmetic number, because the mean of its divisors is an integer number (2955698940).

Almost surely, 2^18916473192 is an apocalyptic number.

18916473192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18916473192 is an abundant number, since it is smaller than the sum of its proper divisors (28374709848).

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

18916473192 is a wasteful number, since it uses less digits than its factorization.

18916473192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788186392 (or 788186388 counting only the distinct ones).

The product of its digits is 653184, while the sum is 51.

The spelling of 18916473192 in words is "eighteen billion, nine hundred sixteen million, four hundred seventy-three thousand, one hundred ninety-two".