19804320383 has 6 divisors (see below), whose sum is σ = 19877742432. Its totient is φ = 19731168540.

The previous prime is 19804320377. The next prime is 19804320463. The reversal of 19804320383 is 38302340891.

It is not a de Polignac number, because 19804320383 - 2¹⁴ = 19804303999 is a prime.

It is a super-2 number, since 2×19804320383² (a number of 21 digits) contains 22 as substring.

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 19804320383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19804320353) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61391 + ... + 208272.

It is an arithmetic number, because the mean of its divisors is an integer number (3312957072).

Almost surely, 2^19804320383 is an apocalyptic number.

19804320383 is a deficient number, since it is larger than the sum of its proper divisors (73422049).

19804320383 is an frugal number, since it uses more digits than its factorization.

19804320383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270205 (or 269934 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 19804320383 in words is "nineteen billion, eight hundred four million, three hundred twenty thousand, three hundred eighty-three".