18529937 has 2 divisors, whose sum is σ = 18529938. Its totient is φ = 18529936.

The previous prime is 18529897. The next prime is 18529943. The reversal of 18529937 is 73992581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17606416 + 923521 = 4196^2 + 961^2 .

It is a cyclic number.

It is not a de Polignac number, because 18529937 - 2¹² = 18525841 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18529967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9264968 + 9264969.

It is an arithmetic number, because the mean of its divisors is an integer number (9264969).

Almost surely, 2^18529937 is an apocalyptic number.

It is an amenable number.

18529937 is a deficient number, since it is larger than the sum of its proper divisors (1).

18529937 is an equidigital number, since it uses as much as digits as its factorization.

18529937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 44.

The square root of 18529937 is about 4304.6413323296. The cubic root of 18529937 is about 264.6212079508.

The spelling of 18529937 in words is "eighteen million, five hundred twenty-nine thousand, nine hundred thirty-seven".