18285129 has 8 divisors (see below), whose sum is σ = 27089120. Its totient is φ = 12190068.

The previous prime is 18285121. The next prime is 18285143. The reversal of 18285129 is 92158281.

It is not a de Polignac number, because 18285129 - 2³ = 18285121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18285093 and 18285102.

It is not an unprimeable number, because it can be changed into a prime (18285121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338587 + ... + 338640.

It is an arithmetic number, because the mean of its divisors is an integer number (3386140).

Almost surely, 2^18285129 is an apocalyptic number.

It is an amenable number.

18285129 is a deficient number, since it is larger than the sum of its proper divisors (8803991).

18285129 is an equidigital number, since it uses as much as digits as its factorization.

18285129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677236 (or 677230 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 18285129 is about 4276.1114344694. Note that the first 3 decimals coincide. The cubic root of 18285129 is about 263.4506915166.

The spelling of 18285129 in words is "eighteen million, two hundred eighty-five thousand, one hundred twenty-nine".