19728393233 has 8 divisors (see below), whose sum is σ = 19894268928. Its totient is φ = 19562682384.

The previous prime is 19728393199. The next prime is 19728393241. The reversal of 19728393233 is 33239382791.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19728393233 - 2¹⁴ = 19728376849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19728399233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205310 + ... + 285672.

It is an arithmetic number, because the mean of its divisors is an integer number (2486783616).

Almost surely, 2^19728393233 is an apocalyptic number.

It is an amenable number.

19728393233 is a deficient number, since it is larger than the sum of its proper divisors (165875695).

19728393233 is a wasteful number, since it uses less digits than its factorization.

19728393233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82423.

The product of its digits is 1469664, while the sum is 50.

The spelling of 19728393233 in words is "nineteen billion, seven hundred twenty-eight million, three hundred ninety-three thousand, two hundred thirty-three".