18130266 has 96 divisors (see below), whose sum is σ = 49840128. Its totient is φ = 4626720.

The previous prime is 18130253. The next prime is 18130291. The reversal of 18130266 is 66203181.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 142695 + ... + 142821.

It is an arithmetic number, because the mean of its divisors is an integer number (519168).

Almost surely, 2^18130266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18130266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24920064).

18130266 is an abundant number, since it is smaller than the sum of its proper divisors (31709862).

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

18130266 is a wasteful number, since it uses less digits than its factorization.

18130266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 18130266 is about 4257.9650069018. The cubic root of 18130266 is about 262.7048306039.

The spelling of 18130266 in words is "eighteen million, one hundred thirty thousand, two hundred sixty-six".