18449311 has 2 divisors, whose sum is σ = 18449312. Its totient is φ = 18449310.

The previous prime is 18449293. The next prime is 18449339. The reversal of 18449311 is 11394481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18449311 - 2⁷ = 18449183 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18449411) 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, 9224655 + 9224656.

It is an arithmetic number, because the mean of its divisors is an integer number (9224656).

Almost surely, 2^18449311 is an apocalyptic number.

18449311 is a deficient number, since it is larger than the sum of its proper divisors (1).

18449311 is an equidigital number, since it uses as much as digits as its factorization.

18449311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 31.

The square root of 18449311 is about 4295.2661151551. The cubic root of 18449311 is about 264.2368503073.

The spelling of 18449311 in words is "eighteen million, four hundred forty-nine thousand, three hundred eleven".