19928163422 has 4 divisors (see below), whose sum is σ = 29892245136. Its totient is φ = 9964081710.

The previous prime is 19928163403. The next prime is 19928163427. The reversal of 19928163422 is 22436182991.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19928163427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4982040854 + ... + 4982040857.

It is an arithmetic number, because the mean of its divisors is an integer number (7473061284).

Almost surely, 2^19928163422 is an apocalyptic number.

19928163422 is a deficient number, since it is larger than the sum of its proper divisors (9964081714).

19928163422 is an equidigital number, since it uses as much as digits as its factorization.

19928163422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9964081713.

The product of its digits is 373248, while the sum is 47.

The spelling of 19928163422 in words is "nineteen billion, nine hundred twenty-eight million, one hundred sixty-three thousand, four hundred twenty-two".