19320181968 has 40 divisors (see below), whose sum is σ = 49917117600. Its totient is φ = 6439202944.

The previous prime is 19320181921. The next prime is 19320182047. The reversal of 19320181968 is 86918102391.

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

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 411103 + ... + 455681.

It is an arithmetic number, because the mean of its divisors is an integer number (1247927940).

Almost surely, 2^19320181968 is an apocalyptic number.

It is an amenable number.

19320181968 is an abundant number, since it is smaller than the sum of its proper divisors (30596935632).

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

19320181968 is a wasteful number, since it uses less digits than its factorization.

19320181968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53619 (or 53613 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 48.

The spelling of 19320181968 in words is "nineteen billion, three hundred twenty million, one hundred eighty-one thousand, nine hundred sixty-eight".