195853943 has 2 divisors, whose sum is σ = 195853944. Its totient is φ = 195853942.

The previous prime is 195853937. The next prime is 195853979. The reversal of 195853943 is 349358591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 195853943 - 2⁴ = 195853927 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195850943) 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, 97926971 + 97926972.

It is an arithmetic number, because the mean of its divisors is an integer number (97926972).

Almost surely, 2^195853943 is an apocalyptic number.

195853943 is a deficient number, since it is larger than the sum of its proper divisors (1).

195853943 is an equidigital number, since it uses as much as digits as its factorization.

195853943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 47.

The square root of 195853943 is about 13994.7827064231. The cubic root of 195853943 is about 580.7342494366.

The spelling of 195853943 in words is "one hundred ninety-five million, eight hundred fifty-three thousand, nine hundred forty-three".