18092449 has 2 divisors, whose sum is σ = 18092450. Its totient is φ = 18092448.

The previous prime is 18092447. The next prime is 18092461. The reversal of 18092449 is 94429081.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15054400 + 3038049 = 3880^2 + 1743^2 .

It is an emirp because it is prime and its reverse (94429081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18092449 - 2¹ = 18092447 is a prime.

Together with 18092447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18092443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9046224 + 9046225.

It is an arithmetic number, because the mean of its divisors is an integer number (9046225).

Almost surely, 2^18092449 is an apocalyptic number.

It is an amenable number.

18092449 is a deficient number, since it is larger than the sum of its proper divisors (1).

18092449 is an equidigital number, since it uses as much as digits as its factorization.

18092449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 18092449 is about 4253.5219524530. The cubic root of 18092449 is about 262.5220492439.

It can be divided in two parts, 180 and 92449, that added together give a palindrome (92629).

The spelling of 18092449 in words is "eighteen million, ninety-two thousand, four hundred forty-nine".