18009124 has 12 divisors (see below), whose sum is σ = 36018304. Its totient is φ = 7718184.

The previous prime is 18009119. The next prime is 18009133. The reversal of 18009124 is 42190081.

It is a happy number.

18009124 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321564 + ... + 321619.

Almost surely, 2^18009124 is an apocalyptic number.

18009124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18009124 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18009124 is a wasteful number, since it uses less digits than its factorization.

18009124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643194 (or 643192 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 18009124 is about 4243.7158246047. The cubic root of 18009124 is about 262.1184127643.

The spelling of 18009124 in words is "eighteen million, nine thousand, one hundred twenty-four".