18230347 has 2 divisors, whose sum is σ = 18230348. Its totient is φ = 18230346.

The previous prime is 18230321. The next prime is 18230383. The reversal of 18230347 is 74303281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18230347 - 2¹¹ = 18228299 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18230447) 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, 9115173 + 9115174.

It is an arithmetic number, because the mean of its divisors is an integer number (9115174).

Almost surely, 2^18230347 is an apocalyptic number.

18230347 is a deficient number, since it is larger than the sum of its proper divisors (1).

18230347 is an equidigital number, since it uses as much as digits as its factorization.

18230347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 18230347 is about 4269.7010433987. The cubic root of 18230347 is about 263.1873300920.

The spelling of 18230347 in words is "eighteen million, two hundred thirty thousand, three hundred forty-seven".