18107804 has 24 divisors (see below), whose sum is σ = 37229808. Its totient is φ = 7597440.

The previous prime is 18107801. The next prime is 18107849. The reversal of 18107804 is 40870181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18107801) 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, 15257 + ... + 16400.

It is an arithmetic number, because the mean of its divisors is an integer number (1551242).

Almost surely, 2^18107804 is an apocalyptic number.

It is an amenable number.

18107804 is an abundant number, since it is smaller than the sum of its proper divisors (19122004).

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

18107804 is a wasteful number, since it uses less digits than its factorization.

18107804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31685 (or 31683 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 18107804 is about 4255.3265444617. The cubic root of 18107804 is about 262.5962954341.

Adding to 18107804 its reverse (40870181), we get a palindrome (58977985).

The spelling of 18107804 in words is "eighteen million, one hundred seven thousand, eight hundred four".