19448494788 has 24 divisors (see below), whose sum is σ = 45490785760. Its totient is φ = 6466979520.

The previous prime is 19448494759. The next prime is 19448494799. The reversal of 19448494788 is 88749484491.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1976398 + ... + 1986213.

Almost surely, 2^19448494788 is an apocalyptic number.

It is an amenable number.

19448494788 is an abundant number, since it is smaller than the sum of its proper divisors (26042290972).

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

19448494788 is a wasteful number, since it uses less digits than its factorization.

19448494788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3963027 (or 3963025 counting only the distinct ones).

The product of its digits is 74317824, while the sum is 66.

The spelling of 19448494788 in words is "nineteen billion, four hundred forty-eight million, four hundred ninety-four thousand, seven hundred eighty-eight".