19421530782 has 16 divisors (see below), whose sum is σ = 40182477840. Its totient is φ = 6250607552.

The previous prime is 19421530757. The next prime is 19421530819. The reversal of 19421530782 is 28703512491.

It is a congruent 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, 55808823 + ... + 55809170.

It is an arithmetic number, because the mean of its divisors is an integer number (2511404865).

Almost surely, 2^19421530782 is an apocalyptic number.

19421530782 is an abundant number, since it is smaller than the sum of its proper divisors (20760947058).

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

19421530782 is a wasteful number, since it uses less digits than its factorization.

19421530782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111618027.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 19421530782 in words is "nineteen billion, four hundred twenty-one million, five hundred thirty thousand, seven hundred eighty-two".