2006686818 has 32 divisors (see below), whose sum is σ = 4461232320. Its totient is φ = 668606400.

The previous prime is 2006686793. The next prime is 2006686837. The reversal of 2006686818 is 8186866002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144621 + ... + 157887.

It is an arithmetic number, because the mean of its divisors is an integer number (139413510).

Almost surely, 2^2006686818 is an apocalyptic number.

2006686818 is an abundant number, since it is smaller than the sum of its proper divisors (2454545502).

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

2006686818 is a wasteful number, since it uses less digits than its factorization.

2006686818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16079 (or 16073 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 2006686818 is about 44796.0580631823. The cubic root of 2006686818 is about 1261.3236317119.

The spelling of 2006686818 in words is "two billion, six million, six hundred eighty-six thousand, eight hundred eighteen".