18234529 has 2 divisors, whose sum is σ = 18234530. Its totient is φ = 18234528.

The previous prime is 18234521. The next prime is 18234553. The reversal of 18234529 is 92543281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17472400 + 762129 = 4180^2 + 873^2 .

It is a cyclic number.

It is not a de Polignac number, because 18234529 - 2³ = 18234521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18234494 and 18234503.

It is not a weakly prime, because it can be changed into another prime (18234521) 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, 9117264 + 9117265.

It is an arithmetic number, because the mean of its divisors is an integer number (9117265).

Almost surely, 2^18234529 is an apocalyptic number.

It is an amenable number.

18234529 is a deficient number, since it is larger than the sum of its proper divisors (1).

18234529 is an equidigital number, since it uses as much as digits as its factorization.

18234529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 18234529 is about 4270.1907451541. The cubic root of 18234529 is about 263.2074534109.

The spelling of 18234529 in words is "eighteen million, two hundred thirty-four thousand, five hundred twenty-nine".