19781422022 has 4 divisors (see below), whose sum is σ = 29672133036. Its totient is φ = 9890711010.

The previous prime is 19781421991. The next prime is 19781422033. The reversal of 19781422022 is 22022418791.

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

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, 4945355504 + ... + 4945355507.

It is an arithmetic number, because the mean of its divisors is an integer number (7418033259).

Almost surely, 2^19781422022 is an apocalyptic number.

19781422022 is a deficient number, since it is larger than the sum of its proper divisors (9890711014).

19781422022 is an equidigital number, since it uses as much as digits as its factorization.

19781422022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9890711013.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 19781422022 in words is "nineteen billion, seven hundred eighty-one million, four hundred twenty-two thousand, twenty-two".