19942688782 has 8 divisors (see below), whose sum is σ = 30027775536. Its totient is φ = 9933430272.

The previous prime is 19942688761. The next prime is 19942688873. The reversal of 19942688782 is 28788624991.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18956403 + ... + 18957454.

It is an arithmetic number, because the mean of its divisors is an integer number (3753471942).

Almost surely, 2^19942688782 is an apocalyptic number.

19942688782 is a deficient number, since it is larger than the sum of its proper divisors (10085086754).

19942688782 is a wasteful number, since it uses less digits than its factorization.

19942688782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37914122.

The product of its digits is 27869184, while the sum is 64.

The spelling of 19942688782 in words is "nineteen billion, nine hundred forty-two million, six hundred eighty-eight thousand, seven hundred eighty-two".