19042838520 has 128 divisors (see below), whose sum is σ = 58349859840. Its totient is φ = 4970001920.

The previous prime is 19042838497. The next prime is 19042838533. The reversal of 19042838520 is 2583824091.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 2737687 + ... + 2744633.

It is an arithmetic number, because the mean of its divisors is an integer number (455858280).

Almost surely, 2^19042838520 is an apocalyptic number.

19042838520 is a gapful number since it is divisible by the number (10) 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 19042838520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29174929920).

19042838520 is an abundant number, since it is smaller than the sum of its proper divisors (39307021320).

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

19042838520 is a wasteful number, since it uses less digits than its factorization.

19042838520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7445 (or 7441 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 19042838520 in words is "nineteen billion, forty-two million, eight hundred thirty-eight thousand, five hundred twenty".