195643161 has 64 divisors (see below), whose sum is σ = 344808960. Its totient is φ = 107308800.

The previous prime is 195643141. The next prime is 195643169. The reversal of 195643161 is 161346591.

195643161 is a `hidden beast` number, since 1 + 9 + 5 + 643 + 1 + 6 + 1 = 666.

195643161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 195643161 - 2⁹ = 195642649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195643169) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 706155 + ... + 706431.

It is an arithmetic number, because the mean of its divisors is an integer number (5387640).

Almost surely, 2^195643161 is an apocalyptic number.

It is an amenable number.

195643161 is a deficient number, since it is larger than the sum of its proper divisors (149165799).

195643161 is a wasteful number, since it uses less digits than its factorization.

195643161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 425 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 195643161 is about 13987.2499441456. The cubic root of 195643161 is about 580.5258419813.

The spelling of 195643161 in words is "one hundred ninety-five million, six hundred forty-three thousand, one hundred sixty-one".