219289811994 has 96 divisors (see below), whose sum is σ = 522474226560. Its totient is φ = 65919744000.

The previous prime is 219289811987. The next prime is 219289811999. The reversal of 219289811994 is 499118982912.

219289811994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (219289811999) 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 47 ways as a sum of consecutive naturals, for example, 69196842 + ... + 69200010.

It is an arithmetic number, because the mean of its divisors is an integer number (5442439860).

Almost surely, 2^219289811994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 219289811994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261237113280).

219289811994 is an abundant number, since it is smaller than the sum of its proper divisors (303184414566).

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

219289811994 is a wasteful number, since it uses less digits than its factorization.

219289811994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5876 (or 5873 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 63.

The spelling of 219289811994 in words is "two hundred nineteen billion, two hundred eighty-nine million, eight hundred eleven thousand, nine hundred ninety-four".