18036287 has 2 divisors, whose sum is σ = 18036288. Its totient is φ = 18036286.

The previous prime is 18036247. The next prime is 18036311. The reversal of 18036287 is 78263081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18036287 - 2¹⁸ = 17774143 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18036247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9018143 + 9018144.

It is an arithmetic number, because the mean of its divisors is an integer number (9018144).

Almost surely, 2^18036287 is an apocalyptic number.

18036287 is a deficient number, since it is larger than the sum of its proper divisors (1).

18036287 is an equidigital number, since it uses as much as digits as its factorization.

18036287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 18036287 is about 4246.9149979721. The cubic root of 18036287 is about 262.2501301798.

The spelling of 18036287 in words is "eighteen million, thirty-six thousand, two hundred eighty-seven".