18104227 has 2 divisors, whose sum is σ = 18104228. Its totient is φ = 18104226.

The previous prime is 18104221. The next prime is 18104237. The reversal of 18104227 is 72240181.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18104227 - 2¹¹ = 18102179 is a prime.

It is not a weakly prime, because it can be changed into another prime (18104221) 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, 9052113 + 9052114.

It is an arithmetic number, because the mean of its divisors is an integer number (9052114).

Almost surely, 2^18104227 is an apocalyptic number.

18104227 is a deficient number, since it is larger than the sum of its proper divisors (1).

18104227 is an equidigital number, since it uses as much as digits as its factorization.

18104227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 18104227 is about 4254.9062269338. The cubic root of 18104227 is about 262.5790032801.

The spelling of 18104227 in words is "eighteen million, one hundred four thousand, two hundred twenty-seven".