19746798784 has 28 divisors (see below), whose sum is σ = 40536266400. Its totient is φ = 9532936448.

The previous prime is 19746798769. The next prime is 19746798803. The reversal of 19746798784 is 48789764791.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5317864 + ... + 5321575.

It is an arithmetic number, because the mean of its divisors is an integer number (1447723800).

Almost surely, 2^19746798784 is an apocalyptic number.

It is an amenable number.

19746798784 is an abundant number, since it is smaller than the sum of its proper divisors (20789467616).

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

19746798784 is a wasteful number, since it uses less digits than its factorization.

19746798784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10639480 (or 10639470 counting only the distinct ones).

The product of its digits is 170698752, while the sum is 70.

The spelling of 19746798784 in words is "nineteen billion, seven hundred forty-six million, seven hundred ninety-eight thousand, seven hundred eighty-four".