18144294 has 16 divisors (see below), whose sum is σ = 41472768. Its totient is φ = 5184072.

The previous prime is 18144281. The next prime is 18144317. The reversal of 18144294 is 49244181.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 215962 + ... + 216045.

It is an arithmetic number, because the mean of its divisors is an integer number (2592048).

Almost surely, 2^18144294 is an apocalyptic number.

18144294 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18144294 is an abundant number, since it is smaller than the sum of its proper divisors (23328474).

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

18144294 is a wasteful number, since it uses less digits than its factorization.

18144294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432019.

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

The square root of 18144294 is about 4259.6119541573. The cubic root of 18144294 is about 262.7725676742.

The spelling of 18144294 in words is "eighteen million, one hundred forty-four thousand, two hundred ninety-four".