2219819 has 8 divisors (see below), whose sum is σ = 2547168. Its totient is φ = 1895040.

The previous prime is 2219813. The next prime is 2219831. The reversal of 2219819 is 9189122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2219819 - 2⁸ = 2219563 is a prime.

It is a super-2 number, since 2×2219819² = 9855192785522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2219813) 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 7 ways as a sum of consecutive naturals, for example, 1889 + ... + 2829.

It is an arithmetic number, because the mean of its divisors is an integer number (318396).

2^2219819 is an apocalyptic number.

2219819 is a deficient number, since it is larger than the sum of its proper divisors (327349).

2219819 is an equidigital number, since it uses as much as digits as its factorization.

2219819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285.

The product of its digits is 2592, while the sum is 32.

The square root of 2219819 is about 1489.9057017140. The cubic root of 2219819 is about 130.4485295865.

The spelling of 2219819 in words is "two million, two hundred nineteen thousand, eight hundred nineteen".