19804320382 has 16 divisors (see below), whose sum is σ = 37036651392. Its totient is φ = 7715968920.

The previous prime is 19804320377. The next prime is 19804320463. The reversal of 19804320382 is 28302340891.

It is a super-2 number, since 2×19804320382² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 64299588 + ... + 64299895.

It is an arithmetic number, because the mean of its divisors is an integer number (2314790712).

Almost surely, 2^19804320382 is an apocalyptic number.

19804320382 is a deficient number, since it is larger than the sum of its proper divisors (17232331010).

19804320382 is a wasteful number, since it uses less digits than its factorization.

19804320382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128599503.

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 19804320382 in words is "nineteen billion, eight hundred four million, three hundred twenty thousand, three hundred eighty-two".