18024009 has 8 divisors (see below), whose sum is σ = 24591072. Its totient is φ = 11736480.

The previous prime is 18023981. The next prime is 18024011. The reversal of 18024009 is 90042081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18024009 - 2¹² = 18019913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18024009.

It is not an unprimeable number, because it can be changed into a prime (18024049) 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, 69732 + ... + 69989.

It is an arithmetic number, because the mean of its divisors is an integer number (3073884).

Almost surely, 2^18024009 is an apocalyptic number.

It is an amenable number.

18024009 is a deficient number, since it is larger than the sum of its proper divisors (6567063).

18024009 is a wasteful number, since it uses less digits than its factorization.

18024009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139767.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 18024009 is about 4245.4692320166. The cubic root of 18024009 is about 262.1906087270.

The spelling of 18024009 in words is "eighteen million, twenty-four thousand, nine".