18752249 has 2 divisors, whose sum is σ = 18752250. Its totient is φ = 18752248.

The previous prime is 18752231. The next prime is 18752267. The reversal of 18752249 is 94225781.

It is a balanced prime because it is at equal distance from previous prime (18752231) and next prime (18752267).

It can be written as a sum of positive squares in only one way, i.e., 11424400 + 7327849 = 3380^2 + 2707^2 .

It is a cyclic number.

It is not a de Polignac number, because 18752249 - 2¹² = 18748153 is a prime.

It is not a weakly prime, because it can be changed into another prime (18752549) 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, 9376124 + 9376125.

It is an arithmetic number, because the mean of its divisors is an integer number (9376125).

Almost surely, 2^18752249 is an apocalyptic number.

It is an amenable number.

18752249 is a deficient number, since it is larger than the sum of its proper divisors (1).

18752249 is an equidigital number, since it uses as much as digits as its factorization.

18752249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 38.

The square root of 18752249 is about 4330.3867032864. The cubic root of 18752249 is about 265.6752637338.

The spelling of 18752249 in words is "eighteen million, seven hundred fifty-two thousand, two hundred forty-nine".