18238546548 has 24 divisors (see below), whose sum is σ = 47285120960. Its totient is φ = 6079515480.

The previous prime is 18238546523. The next prime is 18238546589. The reversal of 18238546548 is 84564583281.

18238546548 is a `hidden beast` number, since 18 + 2 + 3 + 85 + 4 + 6 + 548 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 18238546494 and 18238546503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84437608 + ... + 84437823.

Almost surely, 2^18238546548 is an apocalyptic number.

18238546548 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18238546548 is an abundant number, since it is smaller than the sum of its proper divisors (29046574412).

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

18238546548 is a wasteful number, since it uses less digits than its factorization.

18238546548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168875444 (or 168875436 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 54.

The spelling of 18238546548 in words is "eighteen billion, two hundred thirty-eight million, five hundred forty-six thousand, five hundred forty-eight".