18043082 has 4 divisors (see below), whose sum is σ = 27064626. Its totient is φ = 9021540.

The previous prime is 18043061. The next prime is 18043093. The reversal of 18043082 is 28034081.

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

It can be written as a sum of positive squares in only one way, i.e., 16900321 + 1142761 = 4111^2 + 1069^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4510769 + ... + 4510772.

Almost surely, 2^18043082 is an apocalyptic number.

18043082 is a deficient number, since it is larger than the sum of its proper divisors (9021544).

18043082 is an equidigital number, since it uses as much as digits as its factorization.

18043082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9021543.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 18043082 is about 4247.7149151044. The cubic root of 18043082 is about 262.2830594609.

Subtracting 18043082 from its reverse (28034081), we obtain a palindrome (9990999).

The spelling of 18043082 in words is "eighteen million, forty-three thousand, eighty-two".