19889006079 has 16 divisors (see below), whose sum is σ = 26923750272. Its totient is φ = 13056936288.

The previous prime is 19889006077. The next prime is 19889006083. The reversal of 19889006079 is 97060098891.

It is not a de Polignac number, because 19889006079 - 2¹ = 19889006077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19889006077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 628357 + ... + 659249.

It is an arithmetic number, because the mean of its divisors is an integer number (1682734392).

Almost surely, 2^19889006079 is an apocalyptic number.

19889006079 is a deficient number, since it is larger than the sum of its proper divisors (7034744193).

19889006079 is a wasteful number, since it uses less digits than its factorization.

19889006079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34166.

The product of its (nonzero) digits is 1959552, while the sum is 57.

The spelling of 19889006079 in words is "nineteen billion, eight hundred eighty-nine million, six thousand, seventy-nine".