195847397 has 2 divisors, whose sum is σ = 195847398. Its totient is φ = 195847396.

The previous prime is 195847387. The next prime is 195847403. The reversal of 195847397 is 793748591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137569441 + 58277956 = 11729^2 + 7634^2 .

It is a cyclic number.

It is not a de Polignac number, because 195847397 - 2¹⁸ = 195585253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195847357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97923698 + 97923699.

It is an arithmetic number, because the mean of its divisors is an integer number (97923699).

Almost surely, 2^195847397 is an apocalyptic number.

It is an amenable number.

195847397 is a deficient number, since it is larger than the sum of its proper divisors (1).

195847397 is an equidigital number, since it uses as much as digits as its factorization.

195847397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 53.

The square root of 195847397 is about 13994.5488315987. The cubic root of 195847397 is about 580.7277794303.

The spelling of 195847397 in words is "one hundred ninety-five million, eight hundred forty-seven thousand, three hundred ninety-seven".