19049542859 has 8 divisors (see below), whose sum is σ = 19122323520. Its totient is φ = 18976854600.

The previous prime is 19049542849. The next prime is 19049542867. The reversal of 19049542859 is 95824594091.

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-19049542859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19049542819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405032 + ... + 449610.

It is an arithmetic number, because the mean of its divisors is an integer number (2390290440).

Almost surely, 2^19049542859 is an apocalyptic number.

19049542859 is a deficient number, since it is larger than the sum of its proper divisors (72780661).

19049542859 is a wasteful number, since it uses less digits than its factorization.

19049542859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46201.

The product of its (nonzero) digits is 4665600, while the sum is 56.

The spelling of 19049542859 in words is "nineteen billion, forty-nine million, five hundred forty-two thousand, eight hundred fifty-nine".