808080818 has 4 divisors (see below), whose sum is σ = 1212121230. Its totient is φ = 404040408.

The previous prime is 808080817. The next prime is 808080821. The reversal of 808080818 is 818080808.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 483252289 + 324828529 = 21983^2 + 18023^2 .

It is not an unprimeable number, because it can be changed into a prime (808080817) by changing a digit.

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 as a sum of consecutive naturals, namely, 202020203 + ... + 202020206.

Almost surely, 2^808080818 is an apocalyptic number.

808080818 is a deficient number, since it is larger than the sum of its proper divisors (404040412).

808080818 is a wasteful number, since it uses less digits than its factorization.

808080818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404040411.

The product of its (nonzero) digits is 32768, while the sum is 41.

The square root of 808080818 is about 28426.7623552173. The cubic root of 808080818 is about 931.4329541719.

The spelling of 808080818 in words is "eight hundred eight million, eighty thousand, eight hundred eighteen".