18044269 has 2 divisors, whose sum is σ = 18044270. Its totient is φ = 18044268.

The previous prime is 18044267. The next prime is 18044291. The reversal of 18044269 is 96244081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9223369 + 8820900 = 3037^2 + 2970^2 .

It is an emirp because it is prime and its reverse (96244081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18044269 - 2¹ = 18044267 is a prime.

It is a super-2 number, since 2×18044269² = 651191287488722, which contains 22 as substring.

Together with 18044267, it forms a pair of twin primes.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18044267) 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, 9022134 + 9022135.

It is an arithmetic number, because the mean of its divisors is an integer number (9022135).

Almost surely, 2^18044269 is an apocalyptic number.

18044269 is the 2453-rd hex number.

It is an amenable number.

18044269 is a deficient number, since it is larger than the sum of its proper divisors (1).

18044269 is an equidigital number, since it uses as much as digits as its factorization.

18044269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 18044269 is about 4247.8546349893. The cubic root of 18044269 is about 262.2888109389.

The spelling of 18044269 in words is "eighteen million, forty-four thousand, two hundred sixty-nine".