195930953 has 2 divisors, whose sum is σ = 195930954. Its totient is φ = 195930952.

The previous prime is 195930949. The next prime is 195930971. The reversal of 195930953 is 359039591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99361024 + 96569929 = 9968^2 + 9827^2 .

It is a cyclic number.

It is not a de Polignac number, because 195930953 - 2² = 195930949 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (195930653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97965476 + 97965477.

It is an arithmetic number, because the mean of its divisors is an integer number (97965477).

Almost surely, 2^195930953 is an apocalyptic number.

It is an amenable number.

195930953 is a deficient number, since it is larger than the sum of its proper divisors (1).

195930953 is an equidigital number, since it uses as much as digits as its factorization.

195930953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 164025, while the sum is 44.

The square root of 195930953 is about 13997.5338184982. The cubic root of 195930953 is about 580.8103545919.

The spelling of 195930953 in words is "one hundred ninety-five million, nine hundred thirty thousand, nine hundred fifty-three".