195198071 has 2 divisors, whose sum is σ = 195198072. Its totient is φ = 195198070.

The previous prime is 195198053. The next prime is 195198161. The reversal of 195198071 is 170891591.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195198071 is a prime.

It is a super-4 number, since 4×195198071⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195191071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97599035 + 97599036.

It is an arithmetic number, because the mean of its divisors is an integer number (97599036).

Almost surely, 2^195198071 is an apocalyptic number.

195198071 is a deficient number, since it is larger than the sum of its proper divisors (1).

195198071 is an equidigital number, since it uses as much as digits as its factorization.

195198071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 41.

The square root of 195198071 is about 13971.3303232012. The cubic root of 195198071 is about 580.0852738275.

The spelling of 195198071 in words is "one hundred ninety-five million, one hundred ninety-eight thousand, seventy-one".