27135919 has 2 divisors, whose sum is σ = 27135920. Its totient is φ = 27135918.

The previous prime is 27135917. The next prime is 27135959. The reversal of 27135919 is 91953172.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27135919 - 2¹ = 27135917 is a prime.

It is a super-2 number, since 2×27135919² = 1472716199949122, which contains 22 as substring.

Together with 27135917, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27135917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13567959 + 13567960.

It is an arithmetic number, because the mean of its divisors is an integer number (13567960).

Almost surely, 2^27135919 is an apocalyptic number.

27135919 is a deficient number, since it is larger than the sum of its proper divisors (1).

27135919 is an equidigital number, since it uses as much as digits as its factorization.

27135919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 37.

The square root of 27135919 is about 5209.2148160735. The cubic root of 27135919 is about 300.5025613406.

The spelling of 27135919 in words is "twenty-seven million, one hundred thirty-five thousand, nine hundred nineteen".