27137938189 has 2 divisors, whose sum is σ = 27137938190. Its totient is φ = 27137938188.

The previous prime is 27137938187. The next prime is 27137938199. The reversal of 27137938189 is 98183973172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26266684900 + 871253289 = 162070^2 + 29517^2 .

It is a cyclic number.

It is not a de Polignac number, because 27137938189 - 2¹ = 27137938187 is a prime.

Together with 27137938187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27137938187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13568969094 + 13568969095.

It is an arithmetic number, because the mean of its divisors is an integer number (13568969095).

Almost surely, 2^27137938189 is an apocalyptic number.

It is an amenable number.

27137938189 is a deficient number, since it is larger than the sum of its proper divisors (1).

27137938189 is an equidigital number, since it uses as much as digits as its factorization.

27137938189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 58.

The spelling of 27137938189 in words is "twenty-seven billion, one hundred thirty-seven million, nine hundred thirty-eight thousand, one hundred eighty-nine".