18228122852 has 12 divisors (see below), whose sum is σ = 31907398656. Its totient is φ = 9111723240.

The previous prime is 18228122839. The next prime is 18228122867. The reversal of 18228122852 is 25822182281.

It is a happy number.

It is a super-2 number, since 2×18228122852² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566948 + ... + 598235.

It is an arithmetic number, because the mean of its divisors is an integer number (2658949888).

Almost surely, 2^18228122852 is an apocalyptic number.

It is an amenable number.

18228122852 is a deficient number, since it is larger than the sum of its proper divisors (13679275804).

18228122852 is a wasteful number, since it uses less digits than its factorization.

18228122852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169098 (or 1169096 counting only the distinct ones).

The product of its digits is 81920, while the sum is 41.

The spelling of 18228122852 in words is "eighteen billion, two hundred twenty-eight million, one hundred twenty-two thousand, eight hundred fifty-two".