219818506422 has 32 divisors (see below), whose sum is σ = 456603079680. Its totient is φ = 70474160160.

The previous prime is 219818506363. The next prime is 219818506429. The reversal of 219818506422 is 224605818912.

219818506422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219818506429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3594897 + ... + 3655532.

It is an arithmetic number, because the mean of its divisors is an integer number (14268846240).

Almost surely, 2^219818506422 is an apocalyptic number.

219818506422 is an abundant number, since it is smaller than the sum of its proper divisors (236784573258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

219818506422 is a wasteful number, since it uses less digits than its factorization.

219818506422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7250628.

The product of its (nonzero) digits is 552960, while the sum is 48.

The spelling of 219818506422 in words is "two hundred nineteen billion, eight hundred eighteen million, five hundred six thousand, four hundred twenty-two".