18102008 has 16 divisors (see below), whose sum is σ = 35938080. Its totient is φ = 8518528.

The previous prime is 18101971. The next prime is 18102013. The reversal of 18102008 is 80020181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66416 + ... + 66687.

It is an arithmetic number, because the mean of its divisors is an integer number (2246130).

Almost surely, 2^18102008 is an apocalyptic number.

It is an amenable number.

18102008 is a deficient number, since it is larger than the sum of its proper divisors (17836072).

18102008 is a wasteful number, since it uses less digits than its factorization.

18102008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133126 (or 133122 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 18102008 is about 4254.6454611401. The cubic root of 18102008 is about 262.5682749087.

Adding to 18102008 its reverse (80020181), we get a palindrome (98122189).

The spelling of 18102008 in words is "eighteen million, one hundred two thousand, eight".