195894169 has 4 divisors (see below), whose sum is σ = 201188644. Its totient is φ = 190599696.

The previous prime is 195894163. The next prime is 195894191. The reversal of 195894169 is 961498591.

It is a happy number.

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 131974144 + 63920025 = 11488^2 + 7995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195894169 is a prime.

It is a super-3 number, since 3×195894169³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195894163) 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, 2647182 + ... + 2647255.

It is an arithmetic number, because the mean of its divisors is an integer number (50297161).

Almost surely, 2^195894169 is an apocalyptic number.

It is an amenable number.

195894169 is a deficient number, since it is larger than the sum of its proper divisors (5294475).

195894169 is an equidigital number, since it uses as much as digits as its factorization.

195894169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5294474.

The product of its digits is 699840, while the sum is 52.

The square root of 195894169 is about 13996.2198110776. The cubic root of 195894169 is about 580.7740052813.

The spelling of 195894169 in words is "one hundred ninety-five million, eight hundred ninety-four thousand, one hundred sixty-nine".