18144067 has 4 divisors (see below), whose sum is σ = 18249120. Its totient is φ = 18039016.

The previous prime is 18144059. The next prime is 18144089. The reversal of 18144067 is 76044181.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18144067 - 2³ = 18144059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18144367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52267 + ... + 52612.

It is an arithmetic number, because the mean of its divisors is an integer number (4562280).

Almost surely, 2^18144067 is an apocalyptic number.

18144067 is a deficient number, since it is larger than the sum of its proper divisors (105053).

18144067 is a wasteful number, since it uses less digits than its factorization.

18144067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105052.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 18144067 is about 4259.5853084543. The cubic root of 18144067 is about 262.7714718362.

The spelling of 18144067 in words is "eighteen million, one hundred forty-four thousand, sixty-seven".