163642422 has 16 divisors (see below), whose sum is σ = 330526512. Its totient is φ = 54007200.

The previous prime is 163642411. The next prime is 163642441. The reversal of 163642422 is 224246361.

163642422 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 163642422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134413 + ... + 135624.

It is an arithmetic number, because the mean of its divisors is an integer number (20657907).

Almost surely, 2^163642422 is an apocalyptic number.

163642422 is an abundant number, since it is smaller than the sum of its proper divisors (166884090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163642422 is a wasteful number, since it uses less digits than its factorization.

163642422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270143.

The product of its digits is 13824, while the sum is 30.

The square root of 163642422 is about 12792.2797811805. The cubic root of 163642422 is about 546.9722576717.

Adding to 163642422 its reverse (224246361), we get a palindrome (387888783).

The spelling of 163642422 in words is "one hundred sixty-three million, six hundred forty-two thousand, four hundred twenty-two".