198167197 has 2 divisors, whose sum is σ = 198167198. Its totient is φ = 198167196.

The previous prime is 198167183. The next prime is 198167239. The reversal of 198167197 is 791761891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137030436 + 61136761 = 11706^2 + 7819^2 .

It is a cyclic number.

It is not a de Polignac number, because 198167197 - 2⁷ = 198167069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198167197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198167107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99083598 + 99083599.

It is an arithmetic number, because the mean of its divisors is an integer number (99083599).

Almost surely, 2^198167197 is an apocalyptic number.

It is an amenable number.

198167197 is a deficient number, since it is larger than the sum of its proper divisors (1).

198167197 is an equidigital number, since it uses as much as digits as its factorization.

198167197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 49.

The square root of 198167197 is about 14077.1871124881. The cubic root of 198167197 is about 583.0116800499.

The spelling of 198167197 in words is "one hundred ninety-eight million, one hundred sixty-seven thousand, one hundred ninety-seven".