19728448853 has 8 divisors (see below), whose sum is σ = 19890036000. Its totient is φ = 19567251088.

The previous prime is 19728448837. The next prime is 19728448903. The reversal of 19728448853 is 35884482791.

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 19728448853 - 2⁴ = 19728448837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19728448792 and 19728448801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19728448823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4838 + ... + 198696.

It is an arithmetic number, because the mean of its divisors is an integer number (2486254500).

Almost surely, 2^19728448853 is an apocalyptic number.

It is an amenable number.

19728448853 is a deficient number, since it is larger than the sum of its proper divisors (161587147).

19728448853 is a wasteful number, since it uses less digits than its factorization.

19728448853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194691.

The product of its digits is 15482880, while the sum is 59.

The spelling of 19728448853 in words is "nineteen billion, seven hundred twenty-eight million, four hundred forty-eight thousand, eight hundred fifty-three".