2168219 has 2 divisors, whose sum is σ = 2168220. Its totient is φ = 2168218.

The previous prime is 2168183. The next prime is 2168239. The reversal of 2168219 is 9128612.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2168219 is a prime.

It is a super-2 number, since 2×2168219² = 9402347263922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2168191 and 2168200.

It is not a weakly prime, because it can be changed into another prime (2168239) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084109 + 1084110.

It is an arithmetic number, because the mean of its divisors is an integer number (1084110).

2^2168219 is an apocalyptic number.

2168219 is a deficient number, since it is larger than the sum of its proper divisors (1).

2168219 is an equidigital number, since it uses as much as digits as its factorization.

2168219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 29.

The square root of 2168219 is about 1472.4873513888. The cubic root of 2168219 is about 129.4298303535.

The spelling of 2168219 in words is "two million, one hundred sixty-eight thousand, two hundred nineteen".