18130265668 has 12 divisors (see below), whose sum is σ = 31732545852. Its totient is φ = 9063824000.

The previous prime is 18130265663. The next prime is 18130265693. The reversal of 18130265668 is 86656203181.

It can be written as a sum of positive squares in 2 ways, for example, as 11341824004 + 6788441664 = 106498^2 + 82392^2 .

It is not an unprimeable number, because it can be changed into a prime (18130265663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295705 + ... + 351712.

It is an arithmetic number, because the mean of its divisors is an integer number (2644378821).

Almost surely, 2^18130265668 is an apocalyptic number.

It is an amenable number.

18130265668 is a deficient number, since it is larger than the sum of its proper divisors (13602280184).

18130265668 is a wasteful number, since it uses less digits than its factorization.

18130265668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654422 (or 654420 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 18130265668 in words is "eighteen billion, one hundred thirty million, two hundred sixty-five thousand, six hundred sixty-eight".