19364125728 has 48 divisors (see below), whose sum is σ = 53506141920. Its totient is φ = 6114986496.

The previous prime is 19364125691. The next prime is 19364125741. The reversal of 19364125728 is 82752146391.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5306325 + ... + 5309972.

It is an arithmetic number, because the mean of its divisors is an integer number (1114711290).

Almost surely, 2^19364125728 is an apocalyptic number.

It is an amenable number.

19364125728 is an abundant number, since it is smaller than the sum of its proper divisors (34142016192).

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

19364125728 is a wasteful number, since it uses less digits than its factorization.

19364125728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10616329 (or 10616321 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The spelling of 19364125728 in words is "nineteen billion, three hundred sixty-four million, one hundred twenty-five thousand, seven hundred twenty-eight".