195853937 has 2 divisors, whose sum is σ = 195853938. Its totient is φ = 195853936.

The previous prime is 195853927. The next prime is 195853943. The reversal of 195853937 is 739358591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187991521 + 7862416 = 13711^2 + 2804^2 .

It is an emirp because it is prime and its reverse (739358591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195853937 - 2⁶ = 195853873 is a prime.

It is not a weakly prime, because it can be changed into another prime (195853927) 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, 97926968 + 97926969.

It is an arithmetic number, because the mean of its divisors is an integer number (97926969).

Almost surely, 2^195853937 is an apocalyptic number.

It is an amenable number.

195853937 is a deficient number, since it is larger than the sum of its proper divisors (1).

195853937 is an equidigital number, since it uses as much as digits as its factorization.

195853937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1020600, while the sum is 50.

The square root of 195853937 is about 13994.7824920575. The cubic root of 195853937 is about 580.7342435064.

The spelling of 195853937 in words is "one hundred ninety-five million, eight hundred fifty-three thousand, nine hundred thirty-seven".