19714640422 has 4 divisors (see below), whose sum is σ = 29571960636. Its totient is φ = 9857320210.

The previous prime is 19714640389. The next prime is 19714640437. The reversal of 19714640422 is 22404641791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22404641791 = 7 ⋅3200663113.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4928660104 + ... + 4928660107.

It is an arithmetic number, because the mean of its divisors is an integer number (7392990159).

Almost surely, 2^19714640422 is an apocalyptic number.

19714640422 is a deficient number, since it is larger than the sum of its proper divisors (9857320214).

19714640422 is an equidigital number, since it uses as much as digits as its factorization.

19714640422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9857320213.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 19714640422 in words is "nineteen billion, seven hundred fourteen million, six hundred forty thousand, four hundred twenty-two".