18103132 has 24 divisors (see below), whose sum is σ = 33205760. Its totient is φ = 8624880.

The previous prime is 18103123. The next prime is 18103133. The reversal of 18103132 is 23130181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18103133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7219 + ... + 9397.

Almost surely, 2^18103132 is an apocalyptic number.

It is an amenable number.

18103132 is a deficient number, since it is larger than the sum of its proper divisors (15102628).

18103132 is a wasteful number, since it uses less digits than its factorization.

18103132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281 (or 2279 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 18103132 is about 4254.7775500019. Note that the first 3 decimals coincide. The cubic root of 18103132 is about 262.5737093082.

The spelling of 18103132 in words is "eighteen million, one hundred three thousand, one hundred thirty-two".