18232349 has 2 divisors, whose sum is σ = 18232350. Its totient is φ = 18232348.

The previous prime is 18232327. The next prime is 18232367. The reversal of 18232349 is 94323281.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16144324 + 2088025 = 4018^2 + 1445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18232349 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18232369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9116174 + 9116175.

It is an arithmetic number, because the mean of its divisors is an integer number (9116175).

Almost surely, 2^18232349 is an apocalyptic number.

It is an amenable number.

18232349 is a deficient number, since it is larger than the sum of its proper divisors (1).

18232349 is an equidigital number, since it uses as much as digits as its factorization.

18232349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 18232349 is about 4269.9354796062. The cubic root of 18232349 is about 263.1969638773.

It can be divided in two parts, 18232 and 349, that added together give a palindrome (18581).

The spelling of 18232349 in words is "eighteen million, two hundred thirty-two thousand, three hundred forty-nine".