18008294 has 4 divisors (see below), whose sum is σ = 27012444. Its totient is φ = 9004146.

The previous prime is 18008293. The next prime is 18008311. The reversal of 18008294 is 49280081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49280081 = 5569 ⋅8849.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 18008294.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18008293) 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, 4502072 + ... + 4502075.

It is an arithmetic number, because the mean of its divisors is an integer number (6753111).

Almost surely, 2^18008294 is an apocalyptic number.

18008294 is a deficient number, since it is larger than the sum of its proper divisors (9004150).

18008294 is an equidigital number, since it uses as much as digits as its factorization.

18008294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9004149.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 18008294 is about 4243.6180318214. The cubic root of 18008294 is about 262.1143858865.

The spelling of 18008294 in words is "eighteen million, eight thousand, two hundred ninety-four".