18143484 has 24 divisors (see below), whose sum is σ = 43368528. Its totient is φ = 5900160.

The previous prime is 18143483. The next prime is 18143497. The reversal of 18143484 is 48434181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18143483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17947 + ... + 18930.

It is an arithmetic number, because the mean of its divisors is an integer number (1807022).

Almost surely, 2^18143484 is an apocalyptic number.

It is an amenable number.

18143484 is an abundant number, since it is smaller than the sum of its proper divisors (25225044).

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

18143484 is a wasteful number, since it uses less digits than its factorization.

18143484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36925 (or 36923 counting only the distinct ones).

The product of its digits is 12288, while the sum is 33.

The square root of 18143484 is about 4259.5168740128. The cubic root of 18143484 is about 262.7686573733.

The spelling of 18143484 in words is "eighteen million, one hundred forty-three thousand, four hundred eighty-four".