197478163 has 2 divisors, whose sum is σ = 197478164. Its totient is φ = 197478162.

The previous prime is 197478157. The next prime is 197478209. The reversal of 197478163 is 361874791.

197478163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (197478209) can be obtained adding 197478163 to its sum of digits (46).

It is a weak prime.

It is an emirp because it is prime and its reverse (361874791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197478163 - 2²⁵ = 163923731 is a prime.

It is not a weakly prime, because it can be changed into another prime (197478763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98739081 + 98739082.

It is an arithmetic number, because the mean of its divisors is an integer number (98739082).

Almost surely, 2^197478163 is an apocalyptic number.

197478163 is a deficient number, since it is larger than the sum of its proper divisors (1).

197478163 is an equidigital number, since it uses as much as digits as its factorization.

197478163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 197478163 is about 14052.6923754845. The cubic root of 197478163 is about 582.3351783053.

The spelling of 197478163 in words is "one hundred ninety-seven million, four hundred seventy-eight thousand, one hundred sixty-three".