18136308 has 24 divisors (see below), whose sum is σ = 42602560. Its totient is φ = 6004800.

The previous prime is 18136277. The next prime is 18136319. The reversal of 18136308 is 80363181.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3193 + ... + 6816.

Almost surely, 2^18136308 is an apocalyptic number.

It is an amenable number.

18136308 is an abundant number, since it is smaller than the sum of its proper divisors (24466252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18136308 is a wasteful number, since it uses less digits than its factorization.

18136308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10167 (or 10165 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 18136308 is about 4258.6744416544. The cubic root of 18136308 is about 262.7340099201.

Adding to 18136308 its reverse (80363181), we get a palindrome (98499489).

The spelling of 18136308 in words is "eighteen million, one hundred thirty-six thousand, three hundred eight".