18027677 has 2 divisors, whose sum is σ = 18027678. Its totient is φ = 18027676.

The previous prime is 18027673. The next prime is 18027679. The reversal of 18027677 is 77672081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17397241 + 630436 = 4171^2 + 794^2 .

It is a cyclic number.

It is not a de Polignac number, because 18027677 - 2² = 18027673 is a prime.

Together with 18027679, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18027677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18027673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9013838 + 9013839.

It is an arithmetic number, because the mean of its divisors is an integer number (9013839).

Almost surely, 2^18027677 is an apocalyptic number.

It is an amenable number.

18027677 is a deficient number, since it is larger than the sum of its proper divisors (1).

18027677 is an equidigital number, since it uses as much as digits as its factorization.

18027677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 18027677 is about 4245.9011999810. The cubic root of 18027677 is about 262.2083933372.

The spelling of 18027677 in words is "eighteen million, twenty-seven thousand, six hundred seventy-seven".