19728925801 has 8 divisors (see below), whose sum is σ = 21327324480. Its totient is φ = 18142068432.

The previous prime is 19728925757. The next prime is 19728925831. The reversal of 19728925801 is 10852982791.

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 19728925801 - 2²⁷ = 19594708073 is a prime.

It is a super-2 number, since 2×19728925801² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19728925831) 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, 2881771 + ... + 2888608.

It is an arithmetic number, because the mean of its divisors is an integer number (2665915560).

Almost surely, 2^19728925801 is an apocalyptic number.

It is an amenable number.

19728925801 is a deficient number, since it is larger than the sum of its proper divisors (1598398679).

19728925801 is a wasteful number, since it uses less digits than its factorization.

19728925801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5770655.

The product of its (nonzero) digits is 725760, while the sum is 52.

The spelling of 19728925801 in words is "nineteen billion, seven hundred twenty-eight million, nine hundred twenty-five thousand, eight hundred one".