2219813638979 has 4 divisors (see below), whose sum is σ = 2229340736376. Its totient is φ = 2210286541584.

The previous prime is 2219813638969. The next prime is 2219813638981. The reversal of 2219813638979 is 9798363189122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2219813638979 - 2¹⁶ = 2219813573443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2219813638919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4763548349 + ... + 4763548814.

It is an arithmetic number, because the mean of its divisors is an integer number (557335184094).

Almost surely, 2^{2219813638979} is an apocalyptic number.

2219813638979 is a deficient number, since it is larger than the sum of its proper divisors (9527097397).

2219813638979 is an equidigital number, since it uses as much as digits as its factorization.

2219813638979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9527097396.

The product of its digits is 70543872, while the sum is 68.

The spelling of 2219813638979 in words is "two trillion, two hundred nineteen billion, eight hundred thirteen million, six hundred thirty-eight thousand, nine hundred seventy-nine".