2198191 has 2 divisors, whose sum is σ = 2198192. Its totient is φ = 2198190.

The previous prime is 2198159. The next prime is 2198201. The reversal of 2198191 is 1918912.

2198191 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 2198191 - 2⁵ = 2198159 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2198291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099095 + 1099096.

It is an arithmetic number, because the mean of its divisors is an integer number (1099096).

2^2198191 is an apocalyptic number.

2198191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2198191 is an equidigital number, since it uses as much as digits as its factorization.

2198191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 31.

The square root of 2198191 is about 1482.6297582337. The cubic root of 2198191 is about 130.0234868807.

The spelling of 2198191 in words is "two million, one hundred ninety-eight thousand, one hundred ninety-one".