199180117 has 2 divisors, whose sum is σ = 199180118. Its totient is φ = 199180116.

The previous prime is 199180103. The next prime is 199180123. The reversal of 199180117 is 711081991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193376836 + 5803281 = 13906^2 + 2409^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199180117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199180127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99590058 + 99590059.

It is an arithmetic number, because the mean of its divisors is an integer number (99590059).

Almost surely, 2^199180117 is an apocalyptic number.

It is an amenable number.

199180117 is a deficient number, since it is larger than the sum of its proper divisors (1).

199180117 is an equidigital number, since it uses as much as digits as its factorization.

199180117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 37.

The square root of 199180117 is about 14113.1186135453. The cubic root of 199180117 is about 584.0033356990.

The spelling of 199180117 in words is "one hundred ninety-nine million, one hundred eighty thousand, one hundred seventeen".