18303532912 has 60 divisors (see below), whose sum is σ = 42259232736. Its totient is φ = 7653031680.

The previous prime is 18303532901. The next prime is 18303532939. The reversal of 18303532912 is 21923530381.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 252568 + ... + 316855.

Almost surely, 2^18303532912 is an apocalyptic number.

It is an amenable number.

18303532912 is an abundant number, since it is smaller than the sum of its proper divisors (23955699824).

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

18303532912 is a wasteful number, since it uses less digits than its factorization.

18303532912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569486 (or 569473 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 18303532912 in words is "eighteen billion, three hundred three million, five hundred thirty-two thousand, nine hundred twelve".