19688942804 has 12 divisors (see below), whose sum is σ = 34456633344. Its totient is φ = 9844190424.

The previous prime is 19688942783. The next prime is 19688942809. The reversal of 19688942804 is 40824988691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19688942809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230189 + ... + 303915.

It is an arithmetic number, because the mean of its divisors is an integer number (2871386112).

Almost surely, 2^19688942804 is an apocalyptic number.

It is an amenable number.

19688942804 is a deficient number, since it is larger than the sum of its proper divisors (14767690540).

19688942804 is a wasteful number, since it uses less digits than its factorization.

19688942804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140494 (or 140492 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 59.

The spelling of 19688942804 in words is "nineteen billion, six hundred eighty-eight million, nine hundred forty-two thousand, eight hundred four".