19942441472 has 50 divisors (see below), whose sum is σ = 40356778143. Its totient is φ = 9845002752.

The previous prime is 19942441471. The next prime is 19942441483. The reversal of 19942441472 is 27414424991.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 9971220736 + 9971220736 = 99856^2 + 99856^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=99856.

It is a Duffinian number.

Its product of digits (580608) is a multiple of the sum of its prime divisors (81).

It is not an unprimeable number, because it can be changed into a prime (19942441471) by changing a digit.

It is a polite number, since it can be written in 4 ways as a sum of consecutive naturals, for example, 252435929 + ... + 252436007.

Almost surely, 2^19942441472 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 19942441472

19942441472 is an abundant number, since it is smaller than the sum of its proper divisors (20414336671).

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

19942441472 is an frugal number, since it uses more digits than its factorization.

19942441472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 81 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The spelling of 19942441472 in words is "nineteen billion, nine hundred forty-two million, four hundred forty-one thousand, four hundred seventy-two".