18373481532 has 48 divisors (see below), whose sum is σ = 54439947520. Its totient is φ = 5249565936.

The previous prime is 18373481509. The next prime is 18373481563. The reversal of 18373481532 is 23518437381.

18373481532 is a `hidden beast` number, since 1 + 8 + 3 + 7 + 34 + 81 + 532 = 666.

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, 12151018 + ... + 12152529.

Almost surely, 2^18373481532 is an apocalyptic number.

18373481532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18373481532 is an abundant number, since it is smaller than the sum of its proper divisors (36066465988).

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

18373481532 is a wasteful number, since it uses less digits than its factorization.

18373481532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24303567 (or 24303559 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 18373481532 in words is "eighteen billion, three hundred seventy-three million, four hundred eighty-one thousand, five hundred thirty-two".