18330129 has 12 divisors (see below), whose sum is σ = 26656500. Its totient is φ = 12137184.

The previous prime is 18330127. The next prime is 18330139. The reversal of 18330129 is 92103381.

It can be written as a sum of positive squares in 2 ways, for example, as 7617600 + 10712529 = 2760^2 + 3273^2 .

It is not a de Polignac number, because 18330129 - 2¹ = 18330127 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18330127) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5494 + ... + 8175.

It is an arithmetic number, because the mean of its divisors is an integer number (2221375).

Almost surely, 2^18330129 is an apocalyptic number.

It is an amenable number.

18330129 is a deficient number, since it is larger than the sum of its proper divisors (8326371).

18330129 is a wasteful number, since it uses less digits than its factorization.

18330129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13824 (or 13821 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 18330129 is about 4281.3699910192. The cubic root of 18330129 is about 263.6666332808. Note that the first 4 decimals are identical.

The spelling of 18330129 in words is "eighteen million, three hundred thirty thousand, one hundred twenty-nine".