18119249 has 2 divisors, whose sum is σ = 18119250. Its totient is φ = 18119248.

The previous prime is 18119237. The next prime is 18119251. The reversal of 18119249 is 94291181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10240000 + 7879249 = 3200^2 + 2807^2 .

It is a cyclic number.

It is not a de Polignac number, because 18119249 - 2¹⁶ = 18053713 is a prime.

Together with 18119251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18119219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9059624 + 9059625.

It is an arithmetic number, because the mean of its divisors is an integer number (9059625).

Almost surely, 2^18119249 is an apocalyptic number.

It is an amenable number.

18119249 is a deficient number, since it is larger than the sum of its proper divisors (1).

18119249 is an equidigital number, since it uses as much as digits as its factorization.

18119249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 35.

The square root of 18119249 is about 4256.6711171994. The cubic root of 18119249 is about 262.6516082638.

The spelling of 18119249 in words is "eighteen million, one hundred nineteen thousand, two hundred forty-nine".