18046274 has 4 divisors (see below), whose sum is σ = 27069414. Its totient is φ = 9023136.

The previous prime is 18046241. The next prime is 18046279. The reversal of 18046274 is 47264081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47264081 = 61 ⋅774821.

It can be written as a sum of positive squares in only one way, i.e., 17280649 + 765625 = 4157^2 + 875^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18046274.

It is not an unprimeable number, because it can be changed into a prime (18046279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4511567 + ... + 4511570.

Almost surely, 2^18046274 is an apocalyptic number.

18046274 is a deficient number, since it is larger than the sum of its proper divisors (9023140).

18046274 is an equidigital number, since it uses as much as digits as its factorization.

18046274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9023139.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 18046274 is about 4248.0906299183. The cubic root of 18046274 is about 262.2985253730.

The spelling of 18046274 in words is "eighteen million, forty-six thousand, two hundred seventy-four".