18450329 has 2 divisors, whose sum is σ = 18450330. Its totient is φ = 18450328.

The previous prime is 18450269. The next prime is 18450359. The reversal of 18450329 is 92305481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15721225 + 2729104 = 3965^2 + 1652^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18450329 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18450295 and 18450304.

It is not a weakly prime, because it can be changed into another prime (18450359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9225164 + 9225165.

It is an arithmetic number, because the mean of its divisors is an integer number (9225165).

Almost surely, 2^18450329 is an apocalyptic number.

It is an amenable number.

18450329 is a deficient number, since it is larger than the sum of its proper divisors (1).

18450329 is an equidigital number, since it uses as much as digits as its factorization.

18450329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 18450329 is about 4295.3846160734. The cubic root of 18450329 is about 264.2417102569.

The spelling of 18450329 in words is "eighteen million, four hundred fifty thousand, three hundred twenty-nine".