195097843 has 2 divisors, whose sum is σ = 195097844. Its totient is φ = 195097842.

The previous prime is 195097841. The next prime is 195097867. The reversal of 195097843 is 348790591.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (348790591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195097843 - 2¹ = 195097841 is a prime.

Together with 195097841, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 195097793 and 195097802.

It is not a weakly prime, because it can be changed into another prime (195097841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97548921 + 97548922.

It is an arithmetic number, because the mean of its divisors is an integer number (97548922).

Almost surely, 2^195097843 is an apocalyptic number.

195097843 is a deficient number, since it is larger than the sum of its proper divisors (1).

195097843 is an equidigital number, since it uses as much as digits as its factorization.

195097843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 195097843 is about 13967.7429458019. The cubic root of 195097843 is about 579.9859717178.

The spelling of 195097843 in words is "one hundred ninety-five million, ninety-seven thousand, eight hundred forty-three".