18450829 has 2 divisors, whose sum is σ = 18450830. Its totient is φ = 18450828.

The previous prime is 18450811. The next prime is 18450833. The reversal of 18450829 is 92805481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17015625 + 1435204 = 4125^2 + 1198^2 .

It is a cyclic number.

It is not a de Polignac number, because 18450829 - 2⁷ = 18450701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18450889) 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 as a sum of consecutive naturals, namely, 9225414 + 9225415.

It is an arithmetic number, because the mean of its divisors is an integer number (9225415).

Almost surely, 2^18450829 is an apocalyptic number.

It is an amenable number.

18450829 is a deficient number, since it is larger than the sum of its proper divisors (1).

18450829 is an equidigital number, since it uses as much as digits as its factorization.

18450829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 18450829 is about 4295.4428176848. The cubic root of 18450829 is about 264.2440972001.

The spelling of 18450829 in words is "eighteen million, four hundred fifty thousand, eight hundred twenty-nine".