18123532 has 18 divisors (see below), whose sum is σ = 36894732. Its totient is φ = 7767144.

The previous prime is 18123503. The next prime is 18123557. The reversal of 18123532 is 23532181.

It is a junction number, because it is equal to n+sod(n) for n = 18123497 and 18123506.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46038 + ... + 46429.

Almost surely, 2^18123532 is an apocalyptic number.

It is an amenable number.

18123532 is an abundant number, since it is smaller than the sum of its proper divisors (18771200).

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

18123532 is a wasteful number, since it uses less digits than its factorization.

18123532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92485 (or 92476 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 18123532 is about 4257.1741801340. The cubic root of 18123532 is about 262.6723016934.

The spelling of 18123532 in words is "eighteen million, one hundred twenty-three thousand, five hundred thirty-two".