2129586917 has 2 divisors, whose sum is σ = 2129586918. Its totient is φ = 2129586916.

The previous prime is 2129586883. The next prime is 2129586929. The reversal of 2129586917 is 7196859212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2057438881 + 72148036 = 45359^2 + 8494^2 .

It is a cyclic number.

It is not a de Polignac number, because 2129586917 - 2⁶ = 2129586853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2129546917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064793458 + 1064793459.

It is an arithmetic number, because the mean of its divisors is an integer number (1064793459).

Almost surely, 2^2129586917 is an apocalyptic number.

It is an amenable number.

2129586917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129586917 is an equidigital number, since it uses as much as digits as its factorization.

2129586917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 50.

The square root of 2129586917 is about 46147.4475675524. The cubic root of 2129586917 is about 1286.5651701716.

The spelling of 2129586917 in words is "two billion, one hundred twenty-nine million, five hundred eighty-six thousand, nine hundred seventeen".