18285611 has 2 divisors, whose sum is σ = 18285612. Its totient is φ = 18285610.

The previous prime is 18285599. The next prime is 18285643. The reversal of 18285611 is 11658281.

It is an a-pointer prime, because the next prime (18285643) can be obtained adding 18285611 to its sum of digits (32).

It is a weak prime.

It is an emirp because it is prime and its reverse (11658281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18285611 - 2¹⁴ = 18269227 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18285661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9142805 + 9142806.

It is an arithmetic number, because the mean of its divisors is an integer number (9142806).

Almost surely, 2^18285611 is an apocalyptic number.

18285611 is a deficient number, since it is larger than the sum of its proper divisors (1).

18285611 is an equidigital number, since it uses as much as digits as its factorization.

18285611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 32.

The square root of 18285611 is about 4276.1677937144. The cubic root of 18285611 is about 263.4530063689.

The spelling of 18285611 in words is "eighteen million, two hundred eighty-five thousand, six hundred eleven".