18116827 has 2 divisors, whose sum is σ = 18116828. Its totient is φ = 18116826.

The previous prime is 18116821. The next prime is 18116863. The reversal of 18116827 is 72861181.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18116827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18116792 and 18116801.

It is not a weakly prime, because it can be changed into another prime (18116821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9058413 + 9058414.

It is an arithmetic number, because the mean of its divisors is an integer number (9058414).

Almost surely, 2^18116827 is an apocalyptic number.

18116827 is a deficient number, since it is larger than the sum of its proper divisors (1).

18116827 is an equidigital number, since it uses as much as digits as its factorization.

18116827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 34.

The square root of 18116827 is about 4256.3866130792. The cubic root of 18116827 is about 262.6399048622.

The spelling of 18116827 in words is "eighteen million, one hundred sixteen thousand, eight hundred twenty-seven".