185234719121 has 2 divisors, whose sum is σ = 185234719122. Its totient is φ = 185234719120.

The previous prime is 185234719067. The next prime is 185234719123. The reversal of 185234719121 is 121917432581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185037625600 + 197093521 = 430160^2 + 14039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-185234719121 is a prime.

It is a Sophie Germain prime.

Together with 185234719123, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (185234719123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92617359560 + 92617359561.

It is an arithmetic number, because the mean of its divisors is an integer number (92617359561).

Almost surely, 2^185234719121 is an apocalyptic number.

It is an amenable number.

185234719121 is a deficient number, since it is larger than the sum of its proper divisors (1).

185234719121 is an equidigital number, since it uses as much as digits as its factorization.

185234719121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 44.

The spelling of 185234719121 in words is "one hundred eighty-five billion, two hundred thirty-four million, seven hundred nineteen thousand, one hundred twenty-one".