27818093 has 2 divisors, whose sum is σ = 27818094. Its totient is φ = 27818092.

The previous prime is 27818053. The next prime is 27818099. The reversal of 27818093 is 39081872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18164644 + 9653449 = 4262^2 + 3107^2 .

It is a cyclic number.

It is not a de Polignac number, because 27818093 - 2⁸ = 27817837 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27818099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13909046 + 13909047.

It is an arithmetic number, because the mean of its divisors is an integer number (13909047).

Almost surely, 2^27818093 is an apocalyptic number.

It is an amenable number.

27818093 is a deficient number, since it is larger than the sum of its proper divisors (1).

27818093 is an equidigital number, since it uses as much as digits as its factorization.

27818093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 27818093 is about 5274.2860180313. The cubic root of 27818093 is about 302.9998765553. Note that the first 3 decimals are identical.

The spelling of 27818093 in words is "twenty-seven million, eight hundred eighteen thousand, ninety-three".