18085274 has 4 divisors (see below), whose sum is σ = 27127914. Its totient is φ = 9042636.

The previous prime is 18085273. The next prime is 18085289. The reversal of 18085274 is 47258081.

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., 12909649 + 5175625 = 3593^2 + 2275^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18085273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4521317 + ... + 4521320.

Almost surely, 2^18085274 is an apocalyptic number.

18085274 is a deficient number, since it is larger than the sum of its proper divisors (9042640).

18085274 is an equidigital number, since it uses as much as digits as its factorization.

18085274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9042639.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 18085274 is about 4252.6784501065. The cubic root of 18085274 is about 262.4873414909.

The spelling of 18085274 in words is "eighteen million, eighty-five thousand, two hundred seventy-four".