18049267 has 2 divisors, whose sum is σ = 18049268. Its totient is φ = 18049266.

The previous prime is 18049261. The next prime is 18049271. The reversal of 18049267 is 76294081.

It is a strong prime.

It is an emirp because it is prime and its reverse (76294081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18049267 - 2¹⁵ = 18016499 is a prime.

It is not a weakly prime, because it can be changed into another prime (18049261) 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, 9024633 + 9024634.

It is an arithmetic number, because the mean of its divisors is an integer number (9024634).

Almost surely, 2^18049267 is an apocalyptic number.

18049267 is a deficient number, since it is larger than the sum of its proper divisors (1).

18049267 is an equidigital number, since it uses as much as digits as its factorization.

18049267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 18049267 is about 4248.4428912250. The cubic root of 18049267 is about 262.3130254316.

The spelling of 18049267 in words is "eighteen million, forty-nine thousand, two hundred sixty-seven".