19788119142 has 32 divisors (see below), whose sum is σ = 43694259840. Its totient is φ = 5924152320.

The previous prime is 19788119129. The next prime is 19788119171. The reversal of 19788119142 is 24191188791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1800667 + ... + 1811622.

It is an arithmetic number, because the mean of its divisors is an integer number (1365445620).

Almost surely, 2^19788119142 is an apocalyptic number.

19788119142 is an abundant number, since it is smaller than the sum of its proper divisors (23906140698).

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

19788119142 is a wasteful number, since it uses less digits than its factorization.

19788119142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612388.

The product of its digits is 290304, while the sum is 51.

The spelling of 19788119142 in words is "nineteen billion, seven hundred eighty-eight million, one hundred nineteen thousand, one hundred forty-two".