185272527989 has 2 divisors, whose sum is σ = 185272527990. Its totient is φ = 185272527988.

The previous prime is 185272527961. The next prime is 185272527997. The reversal of 185272527989 is 989725272581.

185272527989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184863881764 + 408646225 = 429958^2 + 20215^2 .

It is a cyclic number.

It is not a de Polignac number, because 185272527989 - 2²⁰ = 185271479413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (185272527889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92636263994 + 92636263995.

It is an arithmetic number, because the mean of its divisors is an integer number (92636263995).

Almost surely, 2^185272527989 is an apocalyptic number.

It is an amenable number.

185272527989 is a deficient number, since it is larger than the sum of its proper divisors (1).

185272527989 is an equidigital number, since it uses as much as digits as its factorization.

185272527989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50803200, while the sum is 65.

The spelling of 185272527989 in words is "one hundred eighty-five billion, two hundred seventy-two million, five hundred twenty-seven thousand, nine hundred eighty-nine".