18037249 has 2 divisors, whose sum is σ = 18037250. Its totient is φ = 18037248.

The previous prime is 18037231. The next prime is 18037277. The reversal of 18037249 is 94273081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17850625 + 186624 = 4225^2 + 432^2 .

It is a cyclic number.

It is not a de Polignac number, because 18037249 - 2¹³ = 18029057 is a prime.

It is not a weakly prime, because it can be changed into another prime (18037549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9018624 + 9018625.

It is an arithmetic number, because the mean of its divisors is an integer number (9018625).

Almost surely, 2^18037249 is an apocalyptic number.

It is an amenable number.

18037249 is a deficient number, since it is larger than the sum of its proper divisors (1).

18037249 is an equidigital number, since it uses as much as digits as its factorization.

18037249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 18037249 is about 4247.0282551450. The cubic root of 18037249 is about 262.2547926349.

The spelling of 18037249 in words is "eighteen million, thirty-seven thousand, two hundred forty-nine".