18045338 has 16 divisors (see below), whose sum is σ = 27605760. Its totient is φ = 8845200.

The previous prime is 18045319. The next prime is 18045341. The reversal of 18045338 is 83354081.

It is a happy number.

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28283 + ... + 28913.

It is an arithmetic number, because the mean of its divisors is an integer number (1725360).

Almost surely, 2^18045338 is an apocalyptic number.

18045338 is a deficient number, since it is larger than the sum of its proper divisors (9560422).

18045338 is a wasteful number, since it uses less digits than its factorization.

18045338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 18045338 is about 4247.9804613487. The cubic root of 18045338 is about 262.2939904450.

The spelling of 18045338 in words is "eighteen million, forty-five thousand, three hundred thirty-eight".