18285034 has 4 divisors (see below), whose sum is σ = 27427554. Its totient is φ = 9142516.

The previous prime is 18285031. The next prime is 18285061. The reversal of 18285034 is 43058281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43058281 = 7 ⋅6151183.

It can be written as a sum of positive squares in only one way, i.e., 18275625 + 9409 = 4275^2 + 97^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 18284987 and 18285005.

It is not an unprimeable number, because it can be changed into a prime (18285031) 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, 4571257 + ... + 4571260.

Almost surely, 2^18285034 is an apocalyptic number.

18285034 is a deficient number, since it is larger than the sum of its proper divisors (9142520).

18285034 is an equidigital number, since it uses as much as digits as its factorization.

18285034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9142519.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 18285034 is about 4276.1003262318. The cubic root of 18285034 is about 263.4502352650.

The spelling of 18285034 in words is "eighteen million, two hundred eighty-five thousand, thirty-four".