18375129 has 6 divisors (see below), whose sum is σ = 26541866. Its totient is φ = 12250080.

The previous prime is 18375107. The next prime is 18375131. The reversal of 18375129 is 92157381.

It can be written as a sum of positive squares in only one way, i.e., 18147600 + 227529 = 4260^2 + 477^2 .

It is not a de Polignac number, because 18375129 - 2⁹ = 18374617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18375093 and 18375102.

It is not an unprimeable number, because it can be changed into a prime (18375169) 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 5 ways as a sum of consecutive naturals, for example, 1020832 + ... + 1020849.

Almost surely, 2^18375129 is an apocalyptic number.

It is an amenable number.

18375129 is a deficient number, since it is larger than the sum of its proper divisors (8166737).

18375129 is a wasteful number, since it uses less digits than its factorization.

18375129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041687 (or 2041684 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 18375129 is about 4286.6220967097. The cubic root of 18375129 is about 263.8822219126.

The spelling of 18375129 in words is "eighteen million, three hundred seventy-five thousand, one hundred twenty-nine".