195907427 has 2 divisors, whose sum is σ = 195907428. Its totient is φ = 195907426.

The previous prime is 195907391. The next prime is 195907457. The reversal of 195907427 is 724709591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195907427 - 2¹⁸ = 195645283 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (195907457) 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, 97953713 + 97953714.

It is an arithmetic number, because the mean of its divisors is an integer number (97953714).

Almost surely, 2^195907427 is an apocalyptic number.

195907427 is a deficient number, since it is larger than the sum of its proper divisors (1).

195907427 is an equidigital number, since it uses as much as digits as its factorization.

195907427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 195907427 is about 13996.6934309500. The cubic root of 195907427 is about 580.7871071313.

The spelling of 195907427 in words is "one hundred ninety-five million, nine hundred seven thousand, four hundred twenty-seven".