195671837 has 2 divisors, whose sum is σ = 195671838. Its totient is φ = 195671836.

The previous prime is 195671807. The next prime is 195671843. The reversal of 195671837 is 738176591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153239641 + 42432196 = 12379^2 + 6514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195671837 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 195671791 and 195671800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195671807) 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, 97835918 + 97835919.

It is an arithmetic number, because the mean of its divisors is an integer number (97835919).

Almost surely, 2^195671837 is an apocalyptic number.

It is an amenable number.

195671837 is a deficient number, since it is larger than the sum of its proper divisors (1).

195671837 is an equidigital number, since it uses as much as digits as its factorization.

195671837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 47.

The square root of 195671837 is about 13988.2749829992. The cubic root of 195671837 is about 580.5542037288.

The spelling of 195671837 in words is "one hundred ninety-five million, six hundred seventy-one thousand, eight hundred thirty-seven".