18167818224 has 80 divisors (see below), whose sum is σ = 47186979840. Its totient is φ = 6023335680.

The previous prime is 18167818187. The next prime is 18167818241. The reversal of 18167818224 is 42281876181.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7942809 + ... + 7945095.

It is an arithmetic number, because the mean of its divisors is an integer number (589837248).

Almost surely, 2^18167818224 is an apocalyptic number.

It is an amenable number.

18167818224 is an abundant number, since it is smaller than the sum of its proper divisors (29019161616).

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

18167818224 is a wasteful number, since it uses less digits than its factorization.

18167818224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118 (or 3112 counting only the distinct ones).

The product of its digits is 344064, while the sum is 48.

It can be divided in two parts, 1816781 and 8224, that added together give a triangular number (1825005 = T₁₉₁₀).

The spelling of 18167818224 in words is "eighteen billion, one hundred sixty-seven million, eight hundred eighteen thousand, two hundred twenty-four".