19545808328 has 12 divisors (see below), whose sum is σ = 36649132065. Its totient is φ = 9772706448.

The previous prime is 19545808309. The next prime is 19545808343. The reversal of 19545808328 is 82380854591.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 19282655044 + 263153284 = 138862^2 + 16222^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=98858.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19545808328.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 370718 + ... + 420146.

Almost surely, 2^19545808328 is an apocalyptic number.

It is an amenable number.

19545808328 is a deficient number, since it is larger than the sum of its proper divisors (17103323737).

19545808328 is an frugal number, since it uses more digits than its factorization.

19545808328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98864 (or 49431 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 53.

The spelling of 19545808328 in words is "nineteen billion, five hundred forty-five million, eight hundred eight thousand, three hundred twenty-eight".