19928330743 has 8 divisors (see below), whose sum is σ = 20016138240. Its totient is φ = 19840560600.

The previous prime is 19928330731. The next prime is 19928330761. The reversal of 19928330743 is 34703382991.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19928330743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19928333743) 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, 1895046 + ... + 1905532.

It is an arithmetic number, because the mean of its divisors is an integer number (2502017280).

Almost surely, 2^19928330743 is an apocalyptic number.

19928330743 is a deficient number, since it is larger than the sum of its proper divisors (87807497).

19928330743 is a wasteful number, since it uses less digits than its factorization.

19928330743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18677.

The product of its (nonzero) digits is 979776, while the sum is 49.

The spelling of 19928330743 in words is "nineteen billion, nine hundred twenty-eight million, three hundred thirty thousand, seven hundred forty-three".