18275233 has 2 divisors, whose sum is σ = 18275234. Its totient is φ = 18275232.

The previous prime is 18275209. The next prime is 18275239. The reversal of 18275233 is 33257281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16064064 + 2211169 = 4008^2 + 1487^2 .

It is a cyclic number.

It is not a de Polignac number, because 18275233 - 2⁹ = 18274721 is a prime.

It is equal to p_1167772 and since 18275233 and 1167772 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 18275195 and 18275204.

It is not a weakly prime, because it can be changed into another prime (18275239) 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 as a sum of consecutive naturals, namely, 9137616 + 9137617.

It is an arithmetic number, because the mean of its divisors is an integer number (9137617).

Almost surely, 2^18275233 is an apocalyptic number.

It is an amenable number.

18275233 is a deficient number, since it is larger than the sum of its proper divisors (1).

18275233 is an equidigital number, since it uses as much as digits as its factorization.

18275233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 18275233 is about 4274.9541518009. The cubic root of 18275233 is about 263.4031560118.

The spelling of 18275233 in words is "eighteen million, two hundred seventy-five thousand, two hundred thirty-three".