19728982346 has 16 divisors (see below), whose sum is σ = 29846950848. Its totient is φ = 9780355200.

The previous prime is 19728982333. The next prime is 19728982381. The reversal of 19728982346 is 64328982791.

It is a happy number.

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, 22106 + ... + 199866.

It is an arithmetic number, because the mean of its divisors is an integer number (1865434428).

Almost surely, 2^19728982346 is an apocalyptic number.

19728982346 is a deficient number, since it is larger than the sum of its proper divisors (10117968502).

19728982346 is a wasteful number, since it uses less digits than its factorization.

19728982346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178237.

The product of its digits is 10450944, while the sum is 59.

The spelling of 19728982346 in words is "nineteen billion, seven hundred twenty-eight million, nine hundred eighty-two thousand, three hundred forty-six".