19345783128 has 256 divisors, whose sum is σ = 59713459200. Its totient is φ = 5100226560.

The previous prime is 19345783117. The next prime is 19345783153. The reversal of 19345783128 is 82138754391.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29267118 + ... + 29267778.

It is an arithmetic number, because the mean of its divisors is an integer number (233255700).

Almost surely, 2^19345783128 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 19345783128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29856729600).

19345783128 is an abundant number, since it is smaller than the sum of its proper divisors (40367676072).

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

19345783128 is a wasteful number, since it uses less digits than its factorization.

19345783128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922 (or 918 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The spelling of 19345783128 in words is "nineteen billion, three hundred forty-five million, seven hundred eighty-three thousand, one hundred twenty-eight".