422443191808 has 120 divisors (see below), whose sum is σ = 968110943184. Its totient is φ = 183670333440.

The previous prime is 422443191697. The next prime is 422443191809. The reversal of 422443191808 is 808191344224.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422443191809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1276660 + ... + 1573132.

Almost surely, 2^422443191808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422443191808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (484055471592).

422443191808 is an abundant number, since it is smaller than the sum of its proper divisors (545667751376).

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

422443191808 is a wasteful number, since it uses less digits than its factorization.

422443191808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296536 (or 296509 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 422443191808 in words is "four hundred twenty-two billion, four hundred forty-three million, one hundred ninety-one thousand, eight hundred eight".