18012074 has 8 divisors (see below), whose sum is σ = 27949860. Its totient is φ = 8695456.

The previous prime is 18012073. The next prime is 18012083. The reversal of 18012074 is 47021081.

It can be written as a sum of positive squares in 2 ways, for example, as 18003049 + 9025 = 4243^2 + 95^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18012073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155219 + ... + 155334.

Almost surely, 2^18012074 is an apocalyptic number.

18012074 is a deficient number, since it is larger than the sum of its proper divisors (9937786).

18012074 is a wasteful number, since it uses less digits than its factorization.

18012074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310584.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 18012074 is about 4244.0633831271. The cubic root of 18012074 is about 262.1327241600.

The spelling of 18012074 in words is "eighteen million, twelve thousand, seventy-four".