19384804218 has 32 divisors (see below), whose sum is σ = 41758359552. Its totient is φ = 5963630400.

The previous prime is 19384804213. The next prime is 19384804247. The reversal of 19384804218 is 81240848391.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (19384804211) 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 15 ways as a sum of consecutive naturals, for example, 623728 + ... + 654068.

It is an arithmetic number, because the mean of its divisors is an integer number (1304948736).

Almost surely, 2^19384804218 is an apocalyptic number.

19384804218 is an abundant number, since it is smaller than the sum of its proper divisors (22373555334).

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

19384804218 is a wasteful number, since it uses less digits than its factorization.

19384804218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38550.

The product of its (nonzero) digits is 442368, while the sum is 48.

The spelling of 19384804218 in words is "nineteen billion, three hundred eighty-four million, eight hundred four thousand, two hundred eighteen".