2136696689 has 2 divisors, whose sum is σ = 2136696690. Its totient is φ = 2136696688.

The previous prime is 2136696613. The next prime is 2136696719. The reversal of 2136696689 is 9866966312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1880696689 + 256000000 = 43367^2 + 16000^2 .

It is a cyclic number.

It is not a de Polignac number, because 2136696689 - 2²⁰ = 2135648113 is a prime.

It is not a weakly prime, because it can be changed into another prime (2136626689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1068348344 + 1068348345.

It is an arithmetic number, because the mean of its divisors is an integer number (1068348345).

Almost surely, 2^2136696689 is an apocalyptic number.

It is an amenable number.

2136696689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2136696689 is an equidigital number, since it uses as much as digits as its factorization.

2136696689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5038848, while the sum is 56.

The square root of 2136696689 is about 46224.4165890712. The cubic root of 2136696689 is about 1287.9953417990.

The spelling of 2136696689 in words is "two billion, one hundred thirty-six million, six hundred ninety-six thousand, six hundred eighty-nine".