18243564846 has 32 divisors (see below), whose sum is σ = 39301694880. Its totient is φ = 5612281344.

The previous prime is 18243564839. The next prime is 18243564851. The reversal of 18243564846 is 64846534281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423186 + ... + 464298.

It is an arithmetic number, because the mean of its divisors is an integer number (1228177965).

Almost surely, 2^18243564846 is an apocalyptic number.

18243564846 is an abundant number, since it is smaller than the sum of its proper divisors (21058130034).

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

18243564846 is a wasteful number, since it uses less digits than its factorization.

18243564846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46820.

The product of its digits is 4423680, while the sum is 51.

The spelling of 18243564846 in words is "eighteen billion, two hundred forty-three million, five hundred sixty-four thousand, eight hundred forty-six".