19489044204 has 216 divisors, whose sum is σ = 62016933888. Its totient is φ = 5325899040.

The previous prime is 19489044193. The next prime is 19489044247. The reversal of 19489044204 is 40244098491.

It is a self number, because there is not a number n which added to its sum of digits gives 19489044204.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 1086549 + ... + 1104339.

Almost surely, 2^19489044204 is an apocalyptic number.

19489044204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19489044204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31008466944).

19489044204 is an abundant number, since it is smaller than the sum of its proper divisors (42527889684).

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

19489044204 is a wasteful number, since it uses less digits than its factorization.

19489044204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17847 (or 17826 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 19489044204 in words is "nineteen billion, four hundred eighty-nine million, forty-four thousand, two hundred four".