1808812808 has 32 divisors (see below), whose sum is σ = 3701950560. Its totient is φ = 821719680.

The previous prime is 1808812783. The next prime is 1808812823. The reversal of 1808812808 is 8082188081.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 184691 + ... + 194237.

It is an arithmetic number, because the mean of its divisors is an integer number (115685955).

Almost surely, 2^1808812808 is an apocalyptic number.

It is an amenable number.

1808812808 is an abundant number, since it is smaller than the sum of its proper divisors (1893137752).

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

1808812808 is a wasteful number, since it uses less digits than its factorization.

1808812808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11717 (or 11713 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 44.

The square root of 1808812808 is about 42530.1399950670. The cubic root of 1808812808 is about 1218.4224005296.

The spelling of 1808812808 in words is "one billion, eight hundred eight million, eight hundred twelve thousand, eight hundred eight".