18093308 has 24 divisors (see below), whose sum is σ = 32596032. Its totient is φ = 8783424.

The previous prime is 18093307. The next prime is 18093331. The reversal of 18093308 is 80339081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18093307) 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 7 ways as a sum of consecutive naturals, for example, 29210 + ... + 29822.

It is an arithmetic number, because the mean of its divisors is an integer number (1358168).

Almost surely, 2^18093308 is an apocalyptic number.

It is an amenable number.

18093308 is a deficient number, since it is larger than the sum of its proper divisors (14502724).

18093308 is a wasteful number, since it uses less digits than its factorization.

18093308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821 (or 819 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 18093308 is about 4253.6229264005. The cubic root of 18093308 is about 262.5262038845.

The spelling of 18093308 in words is "eighteen million, ninety-three thousand, three hundred eight".