19429244448 has 24 divisors (see below), whose sum is σ = 51001766928. Its totient is φ = 6476414784.

The previous prime is 19429244431. The next prime is 19429244449. The reversal of 19429244448 is 84444292491.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 19429244448.

It is not an unprimeable number, because it can be changed into a prime (19429244449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101193886 + ... + 101194077.

It is an arithmetic number, because the mean of its divisors is an integer number (2125073622).

Almost surely, 2^19429244448 is an apocalyptic number.

It is an amenable number.

19429244448 is an abundant number, since it is smaller than the sum of its proper divisors (31572522480).

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

19429244448 is a wasteful number, since it uses less digits than its factorization.

19429244448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202387976 (or 202387968 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 51.

The spelling of 19429244448 in words is "nineteen billion, four hundred twenty-nine million, two hundred forty-four thousand, four hundred forty-eight".