18138124 has 12 divisors (see below), whose sum is σ = 31909248. Its totient is φ = 9021200.

The previous prime is 18138121. The next prime is 18138143. The reversal of 18138124 is 42183181.

It is a junction number, because it is equal to n+sod(n) for n = 18138092 and 18138101.

It is not an unprimeable number, because it can be changed into a prime (18138121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11107 + ... + 12634.

It is an arithmetic number, because the mean of its divisors is an integer number (2659104).

Almost surely, 2^18138124 is an apocalyptic number.

It is an amenable number.

18138124 is a deficient number, since it is larger than the sum of its proper divisors (13771124).

18138124 is a wasteful number, since it uses less digits than its factorization.

18138124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23936 (or 23934 counting only the distinct ones).

The product of its digits is 1536, while the sum is 28.

The square root of 18138124 is about 4258.8876482011. The cubic root of 18138124 is about 262.7427788684.

The spelling of 18138124 in words is "eighteen million, one hundred thirty-eight thousand, one hundred twenty-four".