19748118784 has 27 divisors (see below), whose sum is σ = 39423585103. Its totient is φ = 9872935168.

The previous prime is 19748118727. The next prime is 19748118791. The reversal of 19748118784 is 48781184791.

The square root of 19748118784 is 140528.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2244057 + ... + 2252839.

Almost surely, 2^19748118784 is an apocalyptic number.

19748118784 is the 140528-th square number.

It is an amenable number.

19748118784 is a deficient number, since it is larger than the sum of its proper divisors (19675466319).

19748118784 is an frugal number, since it uses more digits than its factorization.

19748118784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17582 (or 8785 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 58.

The spelling of 19748118784 in words is "nineteen billion, seven hundred forty-eight million, one hundred eighteen thousand, seven hundred eighty-four".