18339129 has 10 divisors (see below), whose sum is σ = 27395610. Its totient is φ = 12226032.

The previous prime is 18339127. The next prime is 18339157. The reversal of 18339129 is 92193381.

It can be written as a sum of positive squares in only one way, i.e., 18275625 + 63504 = 4275^2 + 252^2 .

It is not a de Polignac number, because 18339129 - 2¹ = 18339127 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18339093 and 18339102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18339127) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 113124 + ... + 113285.

It is an arithmetic number, because the mean of its divisors is an integer number (2739561).

Almost surely, 2^18339129 is an apocalyptic number.

It is an amenable number.

18339129 is a deficient number, since it is larger than the sum of its proper divisors (9056481).

18339129 is an equidigital number, since it uses as much as digits as its factorization.

18339129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226421 (or 226412 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 18339129 is about 4282.4209274661. The cubic root of 18339129 is about 263.7097792116.

The spelling of 18339129 in words is "eighteen million, three hundred thirty-nine thousand, one hundred twenty-nine".