197172163 has 2 divisors, whose sum is σ = 197172164. Its totient is φ = 197172162.

The previous prime is 197172119. The next prime is 197172187. The reversal of 197172163 is 361271791.

197172163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197172163 - 2⁹ = 197171651 is a prime.

It is not a weakly prime, because it can be changed into another prime (197172263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98586081 + 98586082.

It is an arithmetic number, because the mean of its divisors is an integer number (98586082).

Almost surely, 2^197172163 is an apocalyptic number.

197172163 is a deficient number, since it is larger than the sum of its proper divisors (1).

197172163 is an equidigital number, since it uses as much as digits as its factorization.

197172163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 37.

The square root of 197172163 is about 14041.8005611816. The cubic root of 197172163 is about 582.0342392362.

The spelling of 197172163 in words is "one hundred ninety-seven million, one hundred seventy-two thousand, one hundred sixty-three".