19047428568 has 144 divisors (see below), whose sum is σ = 60167718000. Its totient is φ = 5427741312.

The previous prime is 19047428551. The next prime is 19047428591. The reversal of 19047428568 is 86582474091.

It is a happy number.

19047428568 is a `hidden beast` number, since 1 + 9 + 0 + 4 + 74 + 2 + 8 + 568 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1365453 + ... + 1379331.

It is an arithmetic number, because the mean of its divisors is an integer number (417831375).

Almost surely, 2^19047428568 is an apocalyptic number.

19047428568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19047428568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30083859000).

19047428568 is an abundant number, since it is smaller than the sum of its proper divisors (41120289432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19047428568 is a wasteful number, since it uses less digits than its factorization.

19047428568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14294 (or 14280 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 19047428568 in words is "nineteen billion, forty-seven million, four hundred twenty-eight thousand, five hundred sixty-eight".