191080199 has 2 divisors, whose sum is σ = 191080200. Its totient is φ = 191080198.

The previous prime is 191080171. The next prime is 191080259. The reversal of 191080199 is 991080191.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 191080199 - 2²⁰ = 190031623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191080129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95540099 + 95540100.

It is an arithmetic number, because the mean of its divisors is an integer number (95540100).

Almost surely, 2^191080199 is an apocalyptic number.

191080199 is a deficient number, since it is larger than the sum of its proper divisors (1).

191080199 is an equidigital number, since it uses as much as digits as its factorization.

191080199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 38.

The square root of 191080199 is about 13823.1761545601. The cubic root of 191080199 is about 575.9771151771.

The spelling of 191080199 in words is "one hundred ninety-one million, eighty thousand, one hundred ninety-nine".