18052637 has 2 divisors, whose sum is σ = 18052638. Its totient is φ = 18052636.

The previous prime is 18052621. The next prime is 18052651. The reversal of 18052637 is 73625081.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10329796 + 7722841 = 3214^2 + 2779^2 .

It is an emirp because it is prime and its reverse (73625081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18052637 - 2⁴ = 18052621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18052667) 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, 9026318 + 9026319.

It is an arithmetic number, because the mean of its divisors is an integer number (9026319).

Almost surely, 2^18052637 is an apocalyptic number.

It is an amenable number.

18052637 is a deficient number, since it is larger than the sum of its proper divisors (1).

18052637 is an equidigital number, since it uses as much as digits as its factorization.

18052637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 18052637 is about 4248.8394886133. The cubic root of 18052637 is about 262.3293500074.

The spelling of 18052637 in words is "eighteen million, fifty-two thousand, six hundred thirty-seven".