818304873 has 4 divisors (see below), whose sum is σ = 1091073168. Its totient is φ = 545536580.

The previous prime is 818304869. The next prime is 818304887. The reversal of 818304873 is 378403818.

818304873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 818304873 - 2² = 818304869 is a prime.

It is a super-2 number, since 2×818304873² = 1339245730351092258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (818304073) 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, 136384143 + ... + 136384148.

It is an arithmetic number, because the mean of its divisors is an integer number (272768292).

Almost surely, 2^818304873 is an apocalyptic number.

It is an amenable number.

818304873 is a deficient number, since it is larger than the sum of its proper divisors (272768295).

818304873 is a wasteful number, since it uses less digits than its factorization.

818304873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272768294.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 818304873 is about 28606.0286128641. The cubic root of 818304873 is about 935.3447489985.

The spelling of 818304873 in words is "eight hundred eighteen million, three hundred four thousand, eight hundred seventy-three".