197163427 has 4 divisors (see below), whose sum is σ = 200505240. Its totient is φ = 193821616.

The previous prime is 197163419. The next prime is 197163469. The reversal of 197163427 is 724361791.

197163427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 197163427 - 2³ = 197163419 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 197163427.

It is not an unprimeable number, because it can be changed into a prime (197163487) 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, 1670818 + ... + 1670935.

It is an arithmetic number, because the mean of its divisors is an integer number (50126310).

Almost surely, 2^197163427 is an apocalyptic number.

197163427 is a deficient number, since it is larger than the sum of its proper divisors (3341813).

197163427 is an equidigital number, since it uses as much as digits as its factorization.

197163427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3341812.

The product of its digits is 63504, while the sum is 40.

The square root of 197163427 is about 14041.4894865182. The cubic root of 197163427 is about 582.0256431508.

The spelling of 197163427 in words is "one hundred ninety-seven million, one hundred sixty-three thousand, four hundred twenty-seven".