18144492 has 12 divisors (see below), whose sum is σ = 42337176. Its totient is φ = 6048160.

The previous prime is 18144481. The next prime is 18144521. The reversal of 18144492 is 29444181.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 756009 + ... + 756032.

It is an arithmetic number, because the mean of its divisors is an integer number (3528098).

Almost surely, 2^18144492 is an apocalyptic number.

18144492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18144492 is an abundant number, since it is smaller than the sum of its proper divisors (24192684).

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

18144492 is a wasteful number, since it uses less digits than its factorization.

18144492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512048 (or 1512046 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 18144492 is about 4259.6351956476. The cubic root of 18144492 is about 262.7735235078.

The spelling of 18144492 in words is "eighteen million, one hundred forty-four thousand, four hundred ninety-two".