18441233 has 2 divisors, whose sum is σ = 18441234. Its totient is φ = 18441232.

The previous prime is 18441169. The next prime is 18441259. The reversal of 18441233 is 33214481.

It is an a-pointer prime, because the next prime (18441259) can be obtained adding 18441233 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18386944 + 54289 = 4288^2 + 233^2 .

It is a cyclic number.

It is not a de Polignac number, because 18441233 - 2⁶ = 18441169 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18441733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9220616 + 9220617.

It is an arithmetic number, because the mean of its divisors is an integer number (9220617).

Almost surely, 2^18441233 is an apocalyptic number.

It is an amenable number.

18441233 is a deficient number, since it is larger than the sum of its proper divisors (1).

18441233 is an equidigital number, since it uses as much as digits as its factorization.

18441233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 26.

The square root of 18441233 is about 4294.3256746549. The cubic root of 18441233 is about 264.1982794562.

The spelling of 18441233 in words is "eighteen million, four hundred forty-one thousand, two hundred thirty-three".