2129634887 has 2 divisors, whose sum is σ = 2129634888. Its totient is φ = 2129634886.

The previous prime is 2129634853. The next prime is 2129634889. The reversal of 2129634887 is 7884369212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2129634887 - 2¹² = 2129630791 is a prime.

Together with 2129634889, 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 (2129634889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064817443 + 1064817444.

It is an arithmetic number, because the mean of its divisors is an integer number (1064817444).

Almost surely, 2^2129634887 is an apocalyptic number.

2129634887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129634887 is an equidigital number, since it uses as much as digits as its factorization.

2129634887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 50.

The square root of 2129634887 is about 46147.9673116812. The cubic root of 2129634887 is about 1286.5748302716.

The spelling of 2129634887 in words is "two billion, one hundred twenty-nine million, six hundred thirty-four thousand, eight hundred eighty-seven".