18000082 has 4 divisors (see below), whose sum is σ = 27000126. Its totient is φ = 9000040.

The previous prime is 18000067. The next prime is 18000089. The reversal of 18000082 is 28000081.

It is a happy number.

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., 9928801 + 8071281 = 3151^2 + 2841^2 .

It is not an unprimeable number, because it can be changed into a prime (18000089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4500019 + ... + 4500022.

Almost surely, 2^18000082 is an apocalyptic number.

18000082 is a deficient number, since it is larger than the sum of its proper divisors (9000044).

18000082 is an equidigital number, since it uses as much as digits as its factorization.

18000082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9000043.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 18000082 is about 4242.6503509010. The cubic root of 18000082 is about 262.0745373847.

Subtracting 18000082 from its reverse (28000081), we obtain a palindrome (9999999).

The spelling of 18000082 in words is "eighteen million, eighty-two", and thus it is an aban number and an uban number.