18216033 has 8 divisors (see below), whose sum is σ = 26496096. Its totient is φ = 11040000.

The previous prime is 18216017. The next prime is 18216043. The reversal of 18216033 is 33061281.

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

It is not a de Polignac number, because 18216033 - 2⁴ = 18216017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18215994 and 18216012.

It is not an unprimeable number, because it can be changed into a prime (18216043) 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, 275968 + ... + 276033.

It is an arithmetic number, because the mean of its divisors is an integer number (3312012).

Almost surely, 2^18216033 is an apocalyptic number.

It is an amenable number.

18216033 is a deficient number, since it is larger than the sum of its proper divisors (8280063).

18216033 is a wasteful number, since it uses less digits than its factorization.

18216033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552015.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 18216033 is about 4268.0244844659. The cubic root of 18216033 is about 263.1184294130.

The spelling of 18216033 in words is "eighteen million, two hundred sixteen thousand, thirty-three".