19857892848 has 120 divisors (see below), whose sum is σ = 54711938688. Its totient is φ = 6205099008.

The previous prime is 19857892793. The next prime is 19857892853. The reversal of 19857892848 is 84829875891.

It is a super-2 number, since 2×19857892848² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3645615 + ... + 3651057.

Almost surely, 2^19857892848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19857892848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27355969344).

19857892848 is an abundant number, since it is smaller than the sum of its proper divisors (34854045840).

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

19857892848 is a wasteful number, since it uses less digits than its factorization.

19857892848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5751 (or 5728 counting only the distinct ones).

The product of its digits is 92897280, while the sum is 69.

The spelling of 19857892848 in words is "nineteen billion, eight hundred fifty-seven million, eight hundred ninety-two thousand, eight hundred forty-eight".