19804314192 has 80 divisors (see below), whose sum is σ = 55136346048. Its totient is φ = 6089241600.

The previous prime is 19804314191. The next prime is 19804314217. The reversal of 19804314192 is 29141340891.

It is a super-2 number, since 2×19804314192² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19804314191) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 914692 + ... + 936092.

Almost surely, 2^19804314192 is an apocalyptic number.

19804314192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19804314192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27568173024).

19804314192 is an abundant number, since it is smaller than the sum of its proper divisors (35332031856).

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

19804314192 is a wasteful number, since it uses less digits than its factorization.

19804314192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22908 (or 22902 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 19804314192 in words is "nineteen billion, eight hundred four million, three hundred fourteen thousand, one hundred ninety-two".