18033385 has 8 divisors (see below), whose sum is σ = 21963456. Its totient is φ = 14211120.

The previous prime is 18033377. The next prime is 18033391. The reversal of 18033385 is 58333081.

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

It is not a de Polignac number, because 18033385 - 2³ = 18033377 is a prime.

It is a Duffinian number.

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, 26581 + ... + 27250.

It is an arithmetic number, because the mean of its divisors is an integer number (2745432).

Almost surely, 2^18033385 is an apocalyptic number.

It is an amenable number.

18033385 is a deficient number, since it is larger than the sum of its proper divisors (3930071).

18033385 is an equidigital number, since it uses as much as digits as its factorization.

18033385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53903.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 18033385 is about 4246.5733244582. The cubic root of 18033385 is about 262.2360642637.

The spelling of 18033385 in words is "eighteen million, thirty-three thousand, three hundred eighty-five".