18124144 has 20 divisors (see below), whose sum is σ = 35254440. Its totient is φ = 9026240.

The previous prime is 18124123. The next prime is 18124153. The reversal of 18124144 is 44142181.

It is a super-3 number, since 3×18124144³ (a number of 23 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 2199 + ... + 6409.

It is an arithmetic number, because the mean of its divisors is an integer number (1762722).

Almost surely, 2^18124144 is an apocalyptic number.

It is an amenable number.

18124144 is a deficient number, since it is larger than the sum of its proper divisors (17130296).

18124144 is a wasteful number, since it uses less digits than its factorization.

18124144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4488 (or 4482 counting only the distinct ones).

The product of its digits is 1024, while the sum is 25.

The square root of 18124144 is about 4257.2460581930. The cubic root of 18124144 is about 262.6752583216.

The spelling of 18124144 in words is "eighteen million, one hundred twenty-four thousand, one hundred forty-four".