18329629 has 2 divisors, whose sum is σ = 18329630. Its totient is φ = 18329628.

The previous prime is 18329611. The next prime is 18329677. The reversal of 18329629 is 92692381.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9597604 + 8732025 = 3098^2 + 2955^2 .

It is a cyclic number.

It is not a de Polignac number, because 18329629 - 2¹³ = 18321437 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18329591 and 18329600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18329329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9164814 + 9164815.

It is an arithmetic number, because the mean of its divisors is an integer number (9164815).

Almost surely, 2^18329629 is an apocalyptic number.

It is an amenable number.

18329629 is a deficient number, since it is larger than the sum of its proper divisors (1).

18329629 is an equidigital number, since it uses as much as digits as its factorization.

18329629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The square root of 18329629 is about 4281.3115980970. The cubic root of 18329629 is about 263.6642358706.

The spelling of 18329629 in words is "eighteen million, three hundred twenty-nine thousand, six hundred twenty-nine".