27118391 has 2 divisors, whose sum is σ = 27118392. Its totient is φ = 27118390.

The previous prime is 27118381. The next prime is 27118463. The reversal of 27118391 is 19381172.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27118391 - 2²² = 22924087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27118381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13559195 + 13559196.

It is an arithmetic number, because the mean of its divisors is an integer number (13559196).

Almost surely, 2^27118391 is an apocalyptic number.

27118391 is a deficient number, since it is larger than the sum of its proper divisors (1).

27118391 is an equidigital number, since it uses as much as digits as its factorization.

27118391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 32.

The square root of 27118391 is about 5207.5321410434. The cubic root of 27118391 is about 300.4378458444.

The spelling of 27118391 in words is "twenty-seven million, one hundred eighteen thousand, three hundred ninety-one".