3198191 has 2 divisors, whose sum is σ = 3198192. Its totient is φ = 3198190.

The previous prime is 3198163. The next prime is 3198197. The reversal of 3198191 is 1918913.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3198191 - 2¹⁰ = 3197167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3198197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1599095 + 1599096.

It is an arithmetic number, because the mean of its divisors is an integer number (1599096).

Almost surely, 2^3198191 is an apocalyptic number.

3198191 is a deficient number, since it is larger than the sum of its proper divisors (1).

3198191 is an equidigital number, since it uses as much as digits as its factorization.

3198191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 32.

The square root of 3198191 is about 1788.3486796484. The cubic root of 3198191 is about 147.3334863239. Note that the first 3 decimals are identical.

The spelling of 3198191 in words is "three million, one hundred ninety-eight thousand, one hundred ninety-one".