185089 has 2 divisors, whose sum is σ = 185090. Its totient is φ = 185088.

The previous prime is 185077. The next prime is 185099. The reversal of 185089 is 980581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148225 + 36864 = 385^2 + 192^2 .

It is a cyclic number.

It is not a de Polignac number, because 185089 - 2⁵ = 185057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 185089.

It is not a weakly prime, because it can be changed into another prime (185069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92544 + 92545.

It is an arithmetic number, because the mean of its divisors is an integer number (92545).

2¹⁸⁵⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

185089 is a deficient number, since it is larger than the sum of its proper divisors (1).

185089 is an equidigital number, since it uses as much as digits as its factorization.

185089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 185089 is about 430.2197113104. The cubic root of 185089 is about 56.9893280523.

The spelling of 185089 in words is "one hundred eighty-five thousand, eighty-nine".