18382218546 has 16 divisors (see below), whose sum is σ = 36766293408. Its totient is φ = 6127096800.

The previous prime is 18382218511. The next prime is 18382218559. The reversal of 18382218546 is 64581228381.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18382218495 and 18382218504.

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, 74241 + ... + 205611.

It is an arithmetic number, because the mean of its divisors is an integer number (2297893338).

Almost surely, 2^18382218546 is an apocalyptic number.

18382218546 is an abundant number, since it is smaller than the sum of its proper divisors (18384074862).

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

18382218546 is a wasteful number, since it uses less digits than its factorization.

18382218546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154697.

The product of its digits is 737280, while the sum is 48.

The spelling of 18382218546 in words is "eighteen billion, three hundred eighty-two million, two hundred eighteen thousand, five hundred forty-six".