808209018 has 24 divisors (see below), whose sum is σ = 1751656608. Its totient is φ = 269320392.

The previous prime is 808209001. The next prime is 808209041. The reversal of 808209018 is 810902808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91221 + ... + 99687.

It is an arithmetic number, because the mean of its divisors is an integer number (72985692).

Almost surely, 2^808209018 is an apocalyptic number.

808209018 is an abundant number, since it is smaller than the sum of its proper divisors (943447590).

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

808209018 is a wasteful number, since it uses less digits than its factorization.

808209018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13778 (or 13775 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 808209018 is about 28429.0171831528. The cubic root of 808209018 is about 931.4822080699.

The spelling of 808209018 in words is "eight hundred eight million, two hundred nine thousand, eighteen".