2194019 has 2 divisors, whose sum is σ = 2194020. Its totient is φ = 2194018.

The previous prime is 2194013. The next prime is 2194021. The reversal of 2194019 is 9104912.

2194019 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 a de Polignac number, because none of the positive numbers 2^k-2194019 is a prime.

It is a super-2 number, since 2×2194019² = 9627438744722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2194021, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2194013) 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, 1097009 + 1097010.

It is an arithmetic number, because the mean of its divisors is an integer number (1097010).

2^2194019 is an apocalyptic number.

2194019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194019 is an equidigital number, since it uses as much as digits as its factorization.

2194019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 2194019 is about 1481.2221305395. Note that the first 3 decimals coincide. The cubic root of 2194019 is about 129.9411765429.

The spelling of 2194019 in words is "two million, one hundred ninety-four thousand, nineteen".