2129988613 has 2 divisors, whose sum is σ = 2129988614. Its totient is φ = 2129988612.

The previous prime is 2129988589. The next prime is 2129988661. The reversal of 2129988613 is 3168899212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1807355169 + 322633444 = 42513^2 + 17962^2 .

It is a cyclic number.

It is not a de Polignac number, because 2129988613 - 2¹³ = 2129980421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2129988683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064994306 + 1064994307.

It is an arithmetic number, because the mean of its divisors is an integer number (1064994307).

Almost surely, 2^2129988613 is an apocalyptic number.

It is an amenable number.

2129988613 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129988613 is an equidigital number, since it uses as much as digits as its factorization.

2129988613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 49.

The square root of 2129988613 is about 46151.7996723855. The cubic root of 2129988613 is about 1286.6460584083.

The spelling of 2129988613 in words is "two billion, one hundred twenty-nine million, nine hundred eighty-eight thousand, six hundred thirteen".