19403426108 has 24 divisors (see below), whose sum is σ = 37059420720. Its totient is φ = 8815806720.

The previous prime is 19403426099. The next prime is 19403426149. The reversal of 19403426108 is 80162430491.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2660 + ... + 197012.

It is an arithmetic number, because the mean of its divisors is an integer number (1544142530).

Almost surely, 2^19403426108 is an apocalyptic number.

It is an amenable number.

19403426108 is a deficient number, since it is larger than the sum of its proper divisors (17655994612).

19403426108 is a wasteful number, since it uses less digits than its factorization.

19403426108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196637 (or 196635 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

Adding to 19403426108 its reverse (80162430491), we get a palindrome (99565856599).

The spelling of 19403426108 in words is "nineteen billion, four hundred three million, four hundred twenty-six thousand, one hundred eight".