18494184788 has 12 divisors (see below), whose sum is σ = 32387016480. Its totient is φ = 9240751512.

The previous prime is 18494184767. The next prime is 18494184811. The reversal of 18494184788 is 88748149481.

It is a self number, because there is not a number n which added to its sum of digits gives 18494184788.

It is a congruent number.

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, 1578656 + ... + 1590327.

It is an arithmetic number, because the mean of its divisors is an integer number (2698918040).

Almost surely, 2^18494184788 is an apocalyptic number.

It is an amenable number.

18494184788 is a deficient number, since it is larger than the sum of its proper divisors (13892831692).

18494184788 is a wasteful number, since it uses less digits than its factorization.

18494184788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3170446 (or 3170444 counting only the distinct ones).

The product of its digits is 16515072, while the sum is 62.

The spelling of 18494184788 in words is "eighteen billion, four hundred ninety-four million, one hundred eighty-four thousand, seven hundred eighty-eight".