18122164 has 12 divisors (see below), whose sum is σ = 32487588. Its totient is φ = 8840000.

The previous prime is 18122161. The next prime is 18122173. The reversal of 18122164 is 46122181.

It can be written as a sum of positive squares in 2 ways, for example, as 7507600 + 10614564 = 2740^2 + 3258^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18122161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55087 + ... + 55414.

It is an arithmetic number, because the mean of its divisors is an integer number (2707299).

Almost surely, 2^18122164 is an apocalyptic number.

It is an amenable number.

18122164 is a deficient number, since it is larger than the sum of its proper divisors (14365424).

18122164 is a wasteful number, since it uses less digits than its factorization.

18122164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110546 (or 110544 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

The square root of 18122164 is about 4257.0135071432. The cubic root of 18122164 is about 262.6656925190.

The spelling of 18122164 in words is "eighteen million, one hundred twenty-two thousand, one hundred sixty-four".