185168500199 has 2 divisors, whose sum is σ = 185168500200. Its totient is φ = 185168500198.

The previous prime is 185168500157. The next prime is 185168500229. The reversal of 185168500199 is 991005861581.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-185168500199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 185168500199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (185168500399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92584250099 + 92584250100.

It is an arithmetic number, because the mean of its divisors is an integer number (92584250100).

Almost surely, 2^185168500199 is an apocalyptic number.

185168500199 is a deficient number, since it is larger than the sum of its proper divisors (1).

185168500199 is an equidigital number, since it uses as much as digits as its factorization.

185168500199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 53.

The spelling of 185168500199 in words is "one hundred eighty-five billion, one hundred sixty-eight million, five hundred thousand, one hundred ninety-nine".