219444444930 has 32 divisors (see below), whose sum is σ = 534084513408. Its totient is φ = 57694313600.

The previous prime is 219444444887. The next prime is 219444444931. The reversal of 219444444930 is 39444444912.

It is a self number, because there is not a number n which added to its sum of digits gives 219444444930.

It is not an unprimeable number, because it can be changed into a prime (219444444931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51510651 + ... + 51514910.

It is an arithmetic number, because the mean of its divisors is an integer number (16690141044).

Almost surely, 2^219444444930 is an apocalyptic number.

219444444930 is an abundant number, since it is smaller than the sum of its proper divisors (314640068478).

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

219444444930 is a wasteful number, since it uses less digits than its factorization.

219444444930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103025642.

The product of its (nonzero) digits is 1990656, while the sum is 48.

The spelling of 219444444930 in words is "two hundred nineteen billion, four hundred forty-four million, four hundred forty-four thousand, nine hundred thirty".