195671933 has 2 divisors, whose sum is σ = 195671934. Its totient is φ = 195671932.

The previous prime is 195671909. The next prime is 195671939. The reversal of 195671933 is 339176591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192293689 + 3378244 = 13867^2 + 1838^2 .

It is a cyclic number.

It is not a de Polignac number, because 195671933 - 2⁶ = 195671869 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195671939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97835966 + 97835967.

It is an arithmetic number, because the mean of its divisors is an integer number (97835967).

Almost surely, 2^195671933 is an apocalyptic number.

It is an amenable number.

195671933 is a deficient number, since it is larger than the sum of its proper divisors (1).

195671933 is an equidigital number, since it uses as much as digits as its factorization.

195671933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153090, while the sum is 44.

The square root of 195671933 is about 13988.2784144440. The cubic root of 195671933 is about 580.5542986721.

The spelling of 195671933 in words is "one hundred ninety-five million, six hundred seventy-one thousand, nine hundred thirty-three".