19403426109 has 8 divisors (see below), whose sum is σ = 25872314112. Its totient is φ = 12935077760.

The previous prime is 19403426099. The next prime is 19403426149. The reversal of 19403426109 is 90162430491.

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

It is a cyclic number.

It is not a de Polignac number, because 19403426109 - 2⁴ = 19403426093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19403426149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41844 + ... + 201389.

It is an arithmetic number, because the mean of its divisors is an integer number (3234039264).

Almost surely, 2^19403426109 is an apocalyptic number.

It is an amenable number.

19403426109 is a deficient number, since it is larger than the sum of its proper divisors (6468888003).

19403426109 is a wasteful number, since it uses less digits than its factorization.

19403426109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269827.

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 19403426109 in words is "nineteen billion, four hundred three million, four hundred twenty-six thousand, one hundred nine".