2194187 has 2 divisors, whose sum is σ = 2194188. Its totient is φ = 2194186.

The previous prime is 2194133. The next prime is 2194193. The reversal of 2194187 is 7814912.

2194187 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 2194187 - 2¹² = 2190091 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2194487) 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, 1097093 + 1097094.

It is an arithmetic number, because the mean of its divisors is an integer number (1097094).

2^2194187 is an apocalyptic number.

2194187 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194187 is an equidigital number, since it uses as much as digits as its factorization.

2194187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 32.

The square root of 2194187 is about 1481.2788393817. The cubic root of 2194187 is about 129.9444930685.

The spelling of 2194187 in words is "two million, one hundred ninety-four thousand, one hundred eighty-seven".