19481544488 has 16 divisors (see below), whose sum is σ = 41746166880. Its totient is φ = 8349233328.

The previous prime is 19481544469. The next prime is 19481544499. The reversal of 19481544488 is 88444518491.

It is a Harshad number since it is a multiple of its sum of digits (56), and also a Moran number because the ratio is a prime number: 347884723 = 19481544488 / (1 + 9 + 4 + 8 + 1 + 5 + 4 + 4 + 4 + 8 + 8).

It is an unprimeable number.

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, 173942306 + ... + 173942417.

It is an arithmetic number, because the mean of its divisors is an integer number (2609135430).

Almost surely, 2^19481544488 is an apocalyptic number.

It is an amenable number.

19481544488 is an abundant number, since it is smaller than the sum of its proper divisors (22264622392).

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

19481544488 is a wasteful number, since it uses less digits than its factorization.

19481544488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347884736 (or 347884732 counting only the distinct ones).

The product of its digits is 5898240, while the sum is 56.

The spelling of 19481544488 in words is "nineteen billion, four hundred eighty-one million, five hundred forty-four thousand, four hundred eighty-eight".