19345928056 has 128 divisors (see below), whose sum is σ = 47368903680. Its totient is φ = 7188166656.

The previous prime is 19345928053. The next prime is 19345928071. The reversal of 19345928056 is 65082954391.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 19345927994 and 19345928012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19345928053) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 7263381 + ... + 7266043.

It is an arithmetic number, because the mean of its divisors is an integer number (370069560).

Almost surely, 2^19345928056 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 19345928056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23684451840).

19345928056 is an abundant number, since it is smaller than the sum of its proper divisors (28022975624).

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

19345928056 is a wasteful number, since it uses less digits than its factorization.

19345928056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3293 (or 3289 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 19345928056 in words is "nineteen billion, three hundred forty-five million, nine hundred twenty-eight thousand, fifty-six".