2136191639 has 2 divisors, whose sum is σ = 2136191640. Its totient is φ = 2136191638.

The previous prime is 2136191611. The next prime is 2136191647. The reversal of 2136191639 is 9361916312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2136191639 - 2²⁰ = 2135143063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2136191596 and 2136191605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2136191699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1068095819 + 1068095820.

It is an arithmetic number, because the mean of its divisors is an integer number (1068095820).

Almost surely, 2^2136191639 is an apocalyptic number.

2136191639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2136191639 is an equidigital number, since it uses as much as digits as its factorization.

2136191639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 41.

The square root of 2136191639 is about 46218.9532443131. The cubic root of 2136191639 is about 1287.8938528495.

The spelling of 2136191639 in words is "two billion, one hundred thirty-six million, one hundred ninety-one thousand, six hundred thirty-nine".