18033117 has 16 divisors (see below), whose sum is σ = 24757440. Its totient is φ = 11670912.

The previous prime is 18033083. The next prime is 18033133. The reversal of 18033117 is 71133081.

It is not a de Polignac number, because 18033117 - 2¹⁵ = 18000349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18033167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14059 + ... + 15287.

It is an arithmetic number, because the mean of its divisors is an integer number (1547340).

Almost surely, 2^18033117 is an apocalyptic number.

It is an amenable number.

18033117 is a deficient number, since it is larger than the sum of its proper divisors (6724323).

18033117 is a wasteful number, since it uses less digits than its factorization.

18033117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 18033117 is about 4246.5417694873. The cubic root of 18033117 is about 262.2347651987.

Adding to 18033117 its reverse (71133081), we get a palindrome (89166198).

The spelling of 18033117 in words is "eighteen million, thirty-three thousand, one hundred seventeen".