1816130668 has 12 divisors (see below), whose sum is σ = 3467158632. Its totient is φ = 825513920.

The previous prime is 1816130663. The next prime is 1816130699. The reversal of 1816130668 is 8660316181.

It is a self number, because there is not a number n which added to its sum of digits gives 1816130668.

It is not an unprimeable number, because it can be changed into a prime (1816130663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20637805 + ... + 20637892.

It is an arithmetic number, because the mean of its divisors is an integer number (288929886).

Almost surely, 2^1816130668 is an apocalyptic number.

It is an amenable number.

1816130668 is a deficient number, since it is larger than the sum of its proper divisors (1651027964).

1816130668 is a wasteful number, since it uses less digits than its factorization.

1816130668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41275712 (or 41275710 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 1816130668 is about 42616.0846160226. The cubic root of 1816130668 is about 1220.0633013827.

The spelling of 1816130668 in words is "one billion, eight hundred sixteen million, one hundred thirty thousand, six hundred sixty-eight".