818782122 has 16 divisors (see below), whose sum is σ = 1642515552. Its totient is φ = 272102160.

The previous prime is 818782093. The next prime is 818782157. The reversal of 818782122 is 221287818.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204153 + ... + 208124.

It is an arithmetic number, because the mean of its divisors is an integer number (102657222).

Almost surely, 2^818782122 is an apocalyptic number.

818782122 is an abundant number, since it is smaller than the sum of its proper divisors (823733430).

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

818782122 is a wasteful number, since it uses less digits than its factorization.

818782122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412613.

The product of its digits is 28672, while the sum is 39.

The square root of 818782122 is about 28614.3691525779. The cubic root of 818782122 is about 935.5265498601.

It can be divided in two parts, 8187 and 82122, that added together give a palindrome (90309).

The spelling of 818782122 in words is "eight hundred eighteen million, seven hundred eighty-two thousand, one hundred twenty-two".