18675455946 has 48 divisors (see below), whose sum is σ = 45735824160. Its totient is φ = 5055009120.

The previous prime is 18675455933. The next prime is 18675455951. The reversal of 18675455946 is 64955457681.

It is a self number, because there is not a number n which added to its sum of digits gives 18675455946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1666045 + ... + 1677216.

It is an arithmetic number, because the mean of its divisors is an integer number (952829670).

Almost surely, 2^18675455946 is an apocalyptic number.

18675455946 is an abundant number, since it is smaller than the sum of its proper divisors (27060368214).

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

18675455946 is a wasteful number, since it uses less digits than its factorization.

18675455946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3343299 (or 3343292 counting only the distinct ones).

The product of its digits is 36288000, while the sum is 60.

The spelling of 18675455946 in words is "eighteen billion, six hundred seventy-five million, four hundred fifty-five thousand, nine hundred forty-six".