18514805532 has 48 divisors (see below), whose sum is σ = 43537009152. Its totient is φ = 6123755520.

The previous prime is 18514805389. The next prime is 18514805537. The reversal of 18514805532 is 23550841581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18514805537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1246413 + ... + 1261179.

It is an arithmetic number, because the mean of its divisors is an integer number (907021024).

Almost surely, 2^18514805532 is an apocalyptic number.

18514805532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18514805532 is an abundant number, since it is smaller than the sum of its proper divisors (25022203620).

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

18514805532 is a wasteful number, since it uses less digits than its factorization.

18514805532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15578 (or 15576 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 42.

The spelling of 18514805532 in words is "eighteen billion, five hundred fourteen million, eight hundred five thousand, five hundred thirty-two".