2808209418 has 16 divisors (see below), whose sum is σ = 6418764480. Its totient is φ = 802345536.

The previous prime is 2808209381. The next prime is 2808209483. The reversal of 2808209418 is 8149028082.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 66862129 = 2808209418 / (2 + 8 + 0 + 8 + 2 + 0 + 9 + 4 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 2808209418.

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 7 ways as a sum of consecutive naturals, for example, 33431023 + ... + 33431106.

It is an arithmetic number, because the mean of its divisors is an integer number (401172780).

Almost surely, 2^2808209418 is an apocalyptic number.

2808209418 is an abundant number, since it is smaller than the sum of its proper divisors (3610555062).

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

2808209418 is a wasteful number, since it uses less digits than its factorization.

2808209418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66862141.

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 2808209418 is about 52992.5411543927. The cubic root of 2808209418 is about 1410.8358838267.

It can be divided in two parts, 2808 and 209418, that added together give a triangular number (212226 = T₆₅₁).

The spelling of 2808209418 in words is "two billion, eight hundred eight million, two hundred nine thousand, four hundred eighteen".