18456557382 has 24 divisors (see below), whose sum is σ = 42341514696. Its totient is φ = 5790292416.

The previous prime is 18456557359. The next prime is 18456557387. The reversal of 18456557382 is 28375565481.

18456557382 is a `hidden beast` number, since 1 + 8 + 4 + 5 + 6 + 557 + 3 + 82 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18456557387) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30157468 + ... + 30158079.

It is an arithmetic number, because the mean of its divisors is an integer number (1764229779).

Almost surely, 2^18456557382 is an apocalyptic number.

18456557382 is an abundant number, since it is smaller than the sum of its proper divisors (23884957314).

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

18456557382 is a wasteful number, since it uses less digits than its factorization.

18456557382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60315572 (or 60315569 counting only the distinct ones).

The product of its digits is 8064000, while the sum is 54.

The spelling of 18456557382 in words is "eighteen billion, four hundred fifty-six million, five hundred fifty-seven thousand, three hundred eighty-two".