19421338000 has 80 divisors (see below), whose sum is σ = 49002685056. Its totient is φ = 7430755200.

The previous prime is 19421337997. The next prime is 19421338007. The reversal of 19421338000 is 83312491.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (19421338007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165102 + ... + 257101.

Almost surely, 2^19421338000 is an apocalyptic number.

19421338000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19421338000 is an abundant number, since it is smaller than the sum of its proper divisors (29581347056).

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

19421338000 is a wasteful number, since it uses less digits than its factorization.

19421338000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422249 (or 422233 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 19421338000 in words is "nineteen billion, four hundred twenty-one million, three hundred thirty-eight thousand".