18804117 has 8 divisors (see below), whose sum is σ = 25683840. Its totient is φ = 12230240.

The previous prime is 18804113. The next prime is 18804119. The reversal of 18804117 is 71140881.

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

It is a cyclic number.

It is not a de Polignac number, because 18804117 - 2² = 18804113 is a prime.

It is a super-2 number, since 2×18804117² = 707189632299378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18804113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76317 + ... + 76562.

It is an arithmetic number, because the mean of its divisors is an integer number (3210480).

Almost surely, 2^18804117 is an apocalyptic number.

It is an amenable number.

18804117 is a deficient number, since it is larger than the sum of its proper divisors (6879723).

18804117 is a wasteful number, since it uses less digits than its factorization.

18804117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152923.

The product of its (nonzero) digits is 1792, while the sum is 30.

The square root of 18804117 is about 4336.3714093698. The cubic root of 18804117 is about 265.9199874296.

Adding to 18804117 its reverse (71140881), we get a palindrome (89944998).

The spelling of 18804117 in words is "eighteen million, eight hundred four thousand, one hundred seventeen".