2219191 has 4 divisors (see below), whose sum is σ = 2389912. Its totient is φ = 2048472.

The previous prime is 2219183. The next prime is 2219209. The reversal of 2219191 is 1919122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1919122 = 2 ⋅959561.

It is a cyclic number.

It is not a de Polignac number, because 2219191 - 2³ = 2219183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2219111) 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 in 3 ways as a sum of consecutive naturals, for example, 85341 + ... + 85366.

It is an arithmetic number, because the mean of its divisors is an integer number (597478).

2^2219191 is an apocalyptic number.

2219191 is a deficient number, since it is larger than the sum of its proper divisors (170721).

2219191 is a wasteful number, since it uses less digits than its factorization.

2219191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170720.

The product of its digits is 324, while the sum is 25.

The square root of 2219191 is about 1489.6949352132. The cubic root of 2219191 is about 130.4362268713.

The spelling of 2219191 in words is "two million, two hundred nineteen thousand, one hundred ninety-one".