19803952112 has 60 divisors (see below), whose sum is σ = 44723264760. Its totient is φ = 8470562688.

The previous prime is 19803952109. The next prime is 19803952121. The reversal of 19803952112 is 21125930891.

It is a self number, because there is not a number n which added to its sum of digits gives 19803952112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 374243 + ... + 423869.

It is an arithmetic number, because the mean of its divisors is an integer number (745387746).

Almost surely, 2^19803952112 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 19803952112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22361632380).

19803952112 is an abundant number, since it is smaller than the sum of its proper divisors (24919312648).

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

19803952112 is a wasteful number, since it uses less digits than its factorization.

19803952112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50158 (or 50145 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 41.

The spelling of 19803952112 in words is "nineteen billion, eight hundred three million, nine hundred fifty-two thousand, one hundred twelve".