It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33081 = 3 ⋅11027.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-18033 is a prime.
It is a D-number.
It is a Curzon number.
218033 is an apocalyptic number.
It is an amenable number.
18033 is an equidigital number, since it uses as much as digits as its factorization.
18033 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6014.
The square root of 18033 is about 134.2870060728. The cubic root of 18033 is about 26.2234198066.
The spelling of 18033 in words is "eighteen thousand, thirty-three".