18233 has 2 divisors, whose sum is σ = 18234. Its totient is φ = 18232.

The previous prime is 18229. The next prime is 18251. The reversal of 18233 is 33281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16384 + 1849 = 128^2 + 43^2 .

It is a cyclic number.

It is not a de Polignac number, because 18233 - 2² = 18229 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (18223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9116 + 9117.

It is an arithmetic number, because the mean of its divisors is an integer number (9117).

2¹⁸²³³ is an apocalyptic number.

It is an amenable number.

18233 is a deficient number, since it is larger than the sum of its proper divisors (1).

18233 is an equidigital number, since it uses as much as digits as its factorization.

18233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 17.

The square root of 18233 is about 135.0296263788. The cubic root of 18233 is about 26.3200096390.

It can be divided in two parts, 182 and 33, that multiplied together give a palindrome (6006).

The spelling of 18233 in words is "eighteen thousand, two hundred thirty-three".