818230918113 has 20 divisors (see below), whose sum is σ = 1396909222720. Its totient is φ = 467560524312.

The previous prime is 818230918093. The next prime is 818230918171. The reversal of 818230918113 is 311819032818.

818230918113 is a `hidden beast` number, since 81 + 82 + 309 + 181 + 13 = 666.

It is not a de Polignac number, because 818230918113 - 2⁸ = 818230917857 is a prime.

It is a super-2 number, since 2×818230918113² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (818230910113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 721543453 + ... + 721544586.

It is an arithmetic number, because the mean of its divisors is an integer number (69845461136).

Almost surely, 2^818230918113 is an apocalyptic number.

It is an amenable number.

818230918113 is a deficient number, since it is larger than the sum of its proper divisors (578678304607).

818230918113 is a wasteful number, since it uses less digits than its factorization.

818230918113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443088058 (or 1443088049 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The spelling of 818230918113 in words is "eight hundred eighteen billion, two hundred thirty million, nine hundred eighteen thousand, one hundred thirteen".