4022506818 has 126 divisors (see below), whose sum is σ = 10009963971. Its totient is φ = 1210869000.

The previous prime is 4022506801. The next prime is 4022506819. The reversal of 4022506818 is 8186052204.

4022506818 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2011253409 + 2011253409 = 44847^2 + 44847^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=44847.

It is a super-2 number, since 2×4022506818² = 32361122201712970248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4022506819) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 26639043 + ... + 26639193.

Almost surely, 2^4022506818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4022506818

4022506818 is an abundant number, since it is smaller than the sum of its proper divisors (5987457153).

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

4022506818 is an equidigital number, since it uses as much as digits as its factorization.

4022506818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 4022506818 is about 63423.2356317462. The cubic root of 4022506818 is about 1590.3727641499.

The spelling of 4022506818 in words is "four billion, twenty-two million, five hundred six thousand, eight hundred eighteen".