185050813 has 2 divisors, whose sum is σ = 185050814. Its totient is φ = 185050812.

The previous prime is 185050793. The next prime is 185050819. The reversal of 185050813 is 318050581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159213924 + 25836889 = 12618^2 + 5083^2 .

It is an emirp because it is prime and its reverse (318050581) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-185050813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (185050819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92525406 + 92525407.

It is an arithmetic number, because the mean of its divisors is an integer number (92525407).

Almost surely, 2^185050813 is an apocalyptic number.

It is an amenable number.

185050813 is a deficient number, since it is larger than the sum of its proper divisors (1).

185050813 is an equidigital number, since it uses as much as digits as its factorization.

185050813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 185050813 is about 13603.3383035195. The cubic root of 185050813 is about 569.8540849442.

The spelling of 185050813 in words is "one hundred eighty-five million, fifty thousand, eight hundred thirteen".