19529728364 has 6 divisors (see below), whose sum is σ = 34177024644. Its totient is φ = 9764864180.

The previous prime is 19529728363. The next prime is 19529728423. The reversal of 19529728364 is 46382792591.

It is a super-2 number, since 2×19529728364² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19529728363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2441216042 + ... + 2441216049.

It is an arithmetic number, because the mean of its divisors is an integer number (5696170774).

Almost surely, 2^19529728364 is an apocalyptic number.

It is an amenable number.

19529728364 is a deficient number, since it is larger than the sum of its proper divisors (14647296280).

19529728364 is a wasteful number, since it uses less digits than its factorization.

19529728364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4882432095 (or 4882432093 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 56.

The spelling of 19529728364 in words is "nineteen billion, five hundred twenty-nine million, seven hundred twenty-eight thousand, three hundred sixty-four".