195197929 has 2 divisors, whose sum is σ = 195197930. Its totient is φ = 195197928.

The previous prime is 195197923. The next prime is 195197939. The reversal of 195197929 is 929791591.

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., 129960000 + 65237929 = 11400^2 + 8077^2 .

It is a cyclic number.

It is not a de Polignac number, because 195197929 - 2⁷ = 195197801 is a prime.

It is not a weakly prime, because it can be changed into another prime (195197923) 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, 97598964 + 97598965.

It is an arithmetic number, because the mean of its divisors is an integer number (97598965).

Almost surely, 2^195197929 is an apocalyptic number.

It is an amenable number.

195197929 is a deficient number, since it is larger than the sum of its proper divisors (1).

195197929 is an equidigital number, since it uses as much as digits as its factorization.

195197929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 459270, while the sum is 52.

The square root of 195197929 is about 13971.3252413649. The cubic root of 195197929 is about 580.0851331634.

The spelling of 195197929 in words is "one hundred ninety-five million, one hundred ninety-seven thousand, nine hundred twenty-nine".