19889293775 has 12 divisors (see below), whose sum is σ = 26559857352. Its totient is φ = 14687478240.

The previous prime is 19889293771. The next prime is 19889293783. The reversal of 19889293775 is 57739298891.

It is not a de Polignac number, because 19889293775 - 2² = 19889293771 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 (19889293771) 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 11 ways as a sum of consecutive naturals, for example, 30598589 + ... + 30599238.

It is an arithmetic number, because the mean of its divisors is an integer number (2213321446).

Almost surely, 2^19889293775 is an apocalyptic number.

19889293775 is a deficient number, since it is larger than the sum of its proper divisors (6670563577).

19889293775 is a wasteful number, since it uses less digits than its factorization.

19889293775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61197850 (or 61197845 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 68.

The spelling of 19889293775 in words is "nineteen billion, eight hundred eighty-nine million, two hundred ninety-three thousand, seven hundred seventy-five".