18382537 has 2 divisors, whose sum is σ = 18382538. Its totient is φ = 18382536.

The previous prime is 18382471. The next prime is 18382547. The reversal of 18382537 is 73528381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14776336 + 3606201 = 3844^2 + 1899^2 .

It is a cyclic number.

It is not a de Polignac number, because 18382537 - 2⁷ = 18382409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18382496 and 18382505.

It is not a weakly prime, because it can be changed into another prime (18382547) 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, 9191268 + 9191269.

It is an arithmetic number, because the mean of its divisors is an integer number (9191269).

Almost surely, 2^18382537 is an apocalyptic number.

It is an amenable number.

18382537 is a deficient number, since it is larger than the sum of its proper divisors (1).

18382537 is an equidigital number, since it uses as much as digits as its factorization.

18382537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 37.

The square root of 18382537 is about 4287.4860932719. The cubic root of 18382537 is about 263.9176788403.

The spelling of 18382537 in words is "eighteen million, three hundred eighty-two thousand, five hundred thirty-seven".