2135138827 has 2 divisors, whose sum is σ = 2135138828. Its totient is φ = 2135138826.

The previous prime is 2135138743. The next prime is 2135138843. The reversal of 2135138827 is 7288315312.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2135138827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2135138827.

It is not a weakly prime, because it can be changed into another prime (2135138527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067569413 + 1067569414.

It is an arithmetic number, because the mean of its divisors is an integer number (1067569414).

Almost surely, 2^2135138827 is an apocalyptic number.

2135138827 is a deficient number, since it is larger than the sum of its proper divisors (1).

2135138827 is an equidigital number, since it uses as much as digits as its factorization.

2135138827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 2135138827 is about 46207.5624438251. The cubic root of 2135138827 is about 1287.6822406061.

The spelling of 2135138827 in words is "two billion, one hundred thirty-five million, one hundred thirty-eight thousand, eight hundred twenty-seven".