18012302 has 60 divisors (see below), whose sum is σ = 35763168. Its totient is φ = 6791400.

The previous prime is 18012259. The next prime is 18012307. The reversal of 18012302 is 20321081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18012307) 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 in 29 ways as a sum of consecutive naturals, for example, 581027 + ... + 581057.

Almost surely, 2^18012302 is an apocalyptic number.

18012302 is a deficient number, since it is larger than the sum of its proper divisors (17750866).

18012302 is an equidigital number, since it uses as much as digits as its factorization.

18012302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 18012302 is about 4244.0902440924. The cubic root of 18012302 is about 262.1338301961.

Adding to 18012302 its reverse (20321081), we get a palindrome (38333383).

The spelling of 18012302 in words is "eighteen million, twelve thousand, three hundred two".