18522046464 has 116 divisors (see below), whose sum is σ = 51539607456. Its totient is φ = 5905580032.

The previous prime is 18522046457. The next prime is 18522046531. The reversal of 18522046464 is 46464022581.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805306357 + ... + 805306379.

Almost surely, 2^18522046464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18522046464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25769803728).

18522046464 is an abundant number, since it is smaller than the sum of its proper divisors (33017560992).

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

18522046464 is an frugal number, since it uses more digits than its factorization.

18522046464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 42.

The spelling of 18522046464 in words is "eighteen billion, five hundred twenty-two million, forty-six thousand, four hundred sixty-four".