18809804 has 12 divisors (see below), whose sum is σ = 35449344. Its totient is φ = 8681424.

The previous prime is 18809797. The next prime is 18809807. The reversal of 18809804 is 40890881.

It is not an unprimeable number, because it can be changed into a prime (18809807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180812 + ... + 180915.

It is an arithmetic number, because the mean of its divisors is an integer number (2954112).

Almost surely, 2^18809804 is an apocalyptic number.

It is an amenable number.

18809804 is a deficient number, since it is larger than the sum of its proper divisors (16639540).

18809804 is a wasteful number, since it uses less digits than its factorization.

18809804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361744 (or 361742 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 18809804 is about 4337.0270923756. The cubic root of 18809804 is about 265.9467924557.

The spelling of 18809804 in words is "eighteen million, eight hundred nine thousand, eight hundred four".