163968422 has 4 divisors (see below), whose sum is σ = 245952636. Its totient is φ = 81984210.

The previous prime is 163968421. The next prime is 163968433. The reversal of 163968422 is 224869361.

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

It is a self number, because there is not a number n which added to its sum of digits gives 163968422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163968421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40992104 + ... + 40992107.

It is an arithmetic number, because the mean of its divisors is an integer number (61488159).

Almost surely, 2^163968422 is an apocalyptic number.

163968422 is a deficient number, since it is larger than the sum of its proper divisors (81984214).

163968422 is an equidigital number, since it uses as much as digits as its factorization.

163968422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81984213.

The product of its digits is 124416, while the sum is 41.

The square root of 163968422 is about 12805.0155017477. The cubic root of 163968422 is about 547.3352333925.

The spelling of 163968422 in words is "one hundred sixty-three million, nine hundred sixty-eight thousand, four hundred twenty-two".