18529129 has 2 divisors, whose sum is σ = 18529130. Its totient is φ = 18529128.

The previous prime is 18529111. The next prime is 18529141. The reversal of 18529129 is 92192581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13307904 + 5221225 = 3648^2 + 2285^2 .

It is a cyclic number.

It is not a de Polignac number, because 18529129 - 2⁵ = 18529097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18529109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9264564 + 9264565.

It is an arithmetic number, because the mean of its divisors is an integer number (9264565).

Almost surely, 2^18529129 is an apocalyptic number.

It is an amenable number.

18529129 is a deficient number, since it is larger than the sum of its proper divisors (1).

18529129 is an equidigital number, since it uses as much as digits as its factorization.

18529129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 37.

The square root of 18529129 is about 4304.5474791202. The cubic root of 18529129 is about 264.6173616156.

The spelling of 18529129 in words is "eighteen million, five hundred twenty-nine thousand, one hundred twenty-nine".