18265144 has 16 divisors (see below), whose sum is σ = 34317000. Its totient is φ = 9113952.

The previous prime is 18265141. The next prime is 18265183. The reversal of 18265144 is 44156281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18265141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2407 + ... + 6505.

Almost surely, 2^18265144 is an apocalyptic number.

It is an amenable number.

18265144 is a deficient number, since it is larger than the sum of its proper divisors (16051856).

18265144 is a wasteful number, since it uses less digits than its factorization.

18265144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4662 (or 4658 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 18265144 is about 4273.7739762416. The cubic root of 18265144 is about 263.3546757614.

The spelling of 18265144 in words is "eighteen million, two hundred sixty-five thousand, one hundred forty-four".