18285443 has 8 divisors (see below), whose sum is σ = 20591616. Its totient is φ = 16086600.

The previous prime is 18285431. The next prime is 18285451. The reversal of 18285443 is 34458281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18285443 - 2⁸ = 18285187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18285403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26471 + ... + 27152.

It is an arithmetic number, because the mean of its divisors is an integer number (2573952).

Almost surely, 2^18285443 is an apocalyptic number.

18285443 is a deficient number, since it is larger than the sum of its proper divisors (2306173).

18285443 is a wasteful number, since it uses less digits than its factorization.

18285443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53665.

The product of its digits is 30720, while the sum is 35.

The square root of 18285443 is about 4276.1481499125. The cubic root of 18285443 is about 263.4521995370.

The spelling of 18285443 in words is "eighteen million, two hundred eighty-five thousand, four hundred forty-three".