19841859488 has 48 divisors (see below), whose sum is σ = 42680657376. Its totient is φ = 9005111040.

The previous prime is 19841859469. The next prime is 19841859491. The reversal of 19841859488 is 88495814891.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 186695 + ... + 273017.

It is an arithmetic number, because the mean of its divisors is an integer number (889180362).

Almost surely, 2^19841859488 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 19841859488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21340328688).

19841859488 is an abundant number, since it is smaller than the sum of its proper divisors (22838797888).

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

19841859488 is a wasteful number, since it uses less digits than its factorization.

19841859488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86997 (or 86989 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 65.

The spelling of 19841859488 in words is "nineteen billion, eight hundred forty-one million, eight hundred fifty-nine thousand, four hundred eighty-eight".