18308806 has 8 divisors (see below), whose sum is σ = 27507600. Its totient is φ = 9139608.

The previous prime is 18308789. The next prime is 18308819. The reversal of 18308806 is 60880381.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 5781 + ... + 8368.

It is an arithmetic number, because the mean of its divisors is an integer number (3438450).

Almost surely, 2^18308806 is an apocalyptic number.

18308806 is a deficient number, since it is larger than the sum of its proper divisors (9198794).

18308806 is a wasteful number, since it uses less digits than its factorization.

18308806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14798.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 18308806 is about 4278.8790588190. The cubic root of 18308806 is about 263.5643545848.

The spelling of 18308806 in words is "eighteen million, three hundred eight thousand, eight hundred six".