19328740641 has 64 divisors (see below), whose sum is σ = 34604236800. Its totient is φ = 10416325248.

The previous prime is 19328740583. The next prime is 19328740657. The reversal of 19328740641 is 14604782391.

It is not a de Polignac number, because 19328740641 - 2⁹ = 19328740129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19328740681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 788725 + ... + 812861.

It is an arithmetic number, because the mean of its divisors is an integer number (540691200).

Almost surely, 2^19328740641 is an apocalyptic number.

It is an amenable number.

19328740641 is a deficient number, since it is larger than the sum of its proper divisors (15275496159).

19328740641 is a wasteful number, since it uses less digits than its factorization.

19328740641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24395 (or 24389 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 19328740641 in words is "nineteen billion, three hundred twenty-eight million, seven hundred forty thousand, six hundred forty-one".