18007529 has 2 divisors, whose sum is σ = 18007530. Its totient is φ = 18007528.

The previous prime is 18007519. The next prime is 18007537. The reversal of 18007529 is 92570081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17977600 + 29929 = 4240^2 + 173^2 .

It is a cyclic number.

It is not a de Polignac number, because 18007529 - 2⁸ = 18007273 is a prime.

It is a super-2 number, since 2×18007529² = 648542201371682, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18007495 and 18007504.

It is not a weakly prime, because it can be changed into another prime (18007519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9003764 + 9003765.

It is an arithmetic number, because the mean of its divisors is an integer number (9003765).

Almost surely, 2^18007529 is an apocalyptic number.

It is an amenable number.

18007529 is a deficient number, since it is larger than the sum of its proper divisors (1).

18007529 is an equidigital number, since it uses as much as digits as its factorization.

18007529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 18007529 is about 4243.5278955134. The cubic root of 18007529 is about 262.1106742570.

The spelling of 18007529 in words is "eighteen million, seven thousand, five hundred twenty-nine".