8091818 has 16 divisors (see below), whose sum is σ = 13958784. Its totient is φ = 3446160.

The previous prime is 8091803. The next prime is 8091821. The reversal of 8091818 is 8181908.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 608 + ... + 4068.

It is an arithmetic number, because the mean of its divisors is an integer number (872424).

Almost surely, 2^8091818 is an apocalyptic number.

8091818 is a deficient number, since it is larger than the sum of its proper divisors (5866966).

8091818 is a wasteful number, since it uses less digits than its factorization.

8091818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3637.

The product of its (nonzero) digits is 4608, while the sum is 35.

The square root of 8091818 is about 2844.6121000938. The cubic root of 8091818 is about 200.7622412508.

The spelling of 8091818 in words is "eight million, ninety-one thousand, eight hundred eighteen".