219328919 has 2 divisors, whose sum is σ = 219328920. Its totient is φ = 219328918.

The previous prime is 219328909. The next prime is 219328961. The reversal of 219328919 is 919823912.

It is a happy number.

219328919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 219328919 - 2⁴ = 219328903 is a prime.

It is a super-2 number, since 2×219328919² = 96210349419417122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 219328919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (219328909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109664459 + 109664460.

It is an arithmetic number, because the mean of its divisors is an integer number (109664460).

Almost surely, 2^219328919 is an apocalyptic number.

219328919 is a deficient number, since it is larger than the sum of its proper divisors (1).

219328919 is an equidigital number, since it uses as much as digits as its factorization.

219328919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 44.

The square root of 219328919 is about 14809.7575604734. The cubic root of 219328919 is about 603.0666319848.

The spelling of 219328919 in words is "two hundred nineteen million, three hundred twenty-eight thousand, nine hundred nineteen".