19743019008 has 104 divisors (see below), whose sum is σ = 52969951968. Its totient is φ = 6539968512.

The previous prime is 19743018979. The next prime is 19743019031. The reversal of 19743019008 is 80091034791.

It is a happy 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, 1998016 + ... + 2007872.

Almost surely, 2^19743019008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19743019008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26484975984).

19743019008 is an abundant number, since it is smaller than the sum of its proper divisors (33226932960).

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

19743019008 is an equidigital number, since it uses as much as digits as its factorization.

19743019008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10047 (or 10025 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 19743019008 in words is "nineteen billion, seven hundred forty-three million, nineteen thousand, eight".