18087343 has 2 divisors, whose sum is σ = 18087344. Its totient is φ = 18087342.

The previous prime is 18087319. The next prime is 18087347. The reversal of 18087343 is 34378081.

It is a strong prime.

It is an emirp because it is prime and its reverse (34378081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18087343 - 2¹⁷ = 17956271 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18087299 and 18087308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18087347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9043671 + 9043672.

It is an arithmetic number, because the mean of its divisors is an integer number (9043672).

Almost surely, 2^18087343 is an apocalyptic number.

18087343 is a deficient number, since it is larger than the sum of its proper divisors (1).

18087343 is an equidigital number, since it uses as much as digits as its factorization.

18087343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 18087343 is about 4252.9217016070. The cubic root of 18087343 is about 262.4973508425.

The spelling of 18087343 in words is "eighteen million, eighty-seven thousand, three hundred forty-three".