80195197 has 2 divisors, whose sum is σ = 80195198. Its totient is φ = 80195196.

The previous prime is 80195173. The next prime is 80195231. The reversal of 80195197 is 79159108.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58767556 + 21427641 = 7666^2 + 4629^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80195197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80195147) 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, 40097598 + 40097599.

It is an arithmetic number, because the mean of its divisors is an integer number (40097599).

Almost surely, 2^80195197 is an apocalyptic number.

It is an amenable number.

80195197 is a deficient number, since it is larger than the sum of its proper divisors (1).

80195197 is an equidigital number, since it uses as much as digits as its factorization.

80195197 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 40.

The square root of 80195197 is about 8955.1771060097. The cubic root of 80195197 is about 431.2371026879.

The spelling of 80195197 in words is "eighty million, one hundred ninety-five thousand, one hundred ninety-seven".