195196817 has 4 divisors (see below), whose sum is σ = 197870820. Its totient is φ = 192522816.

The previous prime is 195196769. The next prime is 195196819. The reversal of 195196817 is 718691591.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 118178641 + 77018176 = 10871^2 + 8776^2 .

It is a cyclic number.

It is not a de Polignac number, because 195196817 - 2⁶ = 195196753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195196819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1336892 + ... + 1337037.

It is an arithmetic number, because the mean of its divisors is an integer number (49467705).

Almost surely, 2^195196817 is an apocalyptic number.

It is an amenable number.

195196817 is a deficient number, since it is larger than the sum of its proper divisors (2674003).

195196817 is an equidigital number, since it uses as much as digits as its factorization.

195196817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2674002.

The product of its digits is 136080, while the sum is 47.

The square root of 195196817 is about 13971.2854455129. The cubic root of 195196817 is about 580.0840316218.

The spelling of 195196817 in words is "one hundred ninety-five million, one hundred ninety-six thousand, eight hundred seventeen".