185072249 has 2 divisors, whose sum is σ = 185072250. Its totient is φ = 185072248.

The previous prime is 185072197. The next prime is 185072267. The reversal of 185072249 is 942270581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136142224 + 48930025 = 11668^2 + 6995^2 .

It is a cyclic number.

It is not a de Polignac number, because 185072249 - 2¹² = 185068153 is a prime.

It is not a weakly prime, because it can be changed into another prime (185072549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92536124 + 92536125.

It is an arithmetic number, because the mean of its divisors is an integer number (92536125).

Almost surely, 2^185072249 is an apocalyptic number.

It is an amenable number.

185072249 is a deficient number, since it is larger than the sum of its proper divisors (1).

185072249 is an equidigital number, since it uses as much as digits as its factorization.

185072249 is an odious number, because the sum of its binary digits is odd.

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

The square root of 185072249 is about 13604.1261755395. The cubic root of 185072249 is about 569.8760877666.

The spelling of 185072249 in words is "one hundred eighty-five million, seventy-two thousand, two hundred forty-nine".