194968197 has 12 divisors (see below), whose sum is σ = 282626604. Its totient is φ = 129514560.

The previous prime is 194968187. The next prime is 194968229. The reversal of 194968197 is 791869491.

It can be written as a sum of positive squares in 2 ways, for example, as 86099841 + 108868356 = 9279^2 + 10434^2 .

It is not a de Polignac number, because 194968197 - 2⁷ = 194968069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194968127) 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 in 11 ways as a sum of consecutive naturals, for example, 36018 + ... + 41075.

It is an arithmetic number, because the mean of its divisors is an integer number (23552217).

Almost surely, 2^194968197 is an apocalyptic number.

It is an amenable number.

194968197 is a deficient number, since it is larger than the sum of its proper divisors (87658407).

194968197 is a wasteful number, since it uses less digits than its factorization.

194968197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77380 (or 77377 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The square root of 194968197 is about 13963.1012672687. The cubic root of 194968197 is about 579.8574729058.

The spelling of 194968197 in words is "one hundred ninety-four million, nine hundred sixty-eight thousand, one hundred ninety-seven".