18118283 has 2 divisors, whose sum is σ = 18118284. Its totient is φ = 18118282.

The previous prime is 18118279. The next prime is 18118297. The reversal of 18118283 is 38281181.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18118283 - 2² = 18118279 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18118213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9059141 + 9059142.

It is an arithmetic number, because the mean of its divisors is an integer number (9059142).

Almost surely, 2^18118283 is an apocalyptic number.

18118283 is a deficient number, since it is larger than the sum of its proper divisors (1).

18118283 is an equidigital number, since it uses as much as digits as its factorization.

18118283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 32.

The square root of 18118283 is about 4256.5576467376. The cubic root of 18118283 is about 262.6469405581.

The spelling of 18118283 in words is "eighteen million, one hundred eighteen thousand, two hundred eighty-three".