2136654643 has 2 divisors, whose sum is σ = 2136654644. Its totient is φ = 2136654642.

The previous prime is 2136654551. The next prime is 2136654647. The reversal of 2136654643 is 3464566312.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2136654643 - 2⁹ = 2136654131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2136654596 and 2136654605.

It is not a weakly prime, because it can be changed into another prime (2136654647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1068327321 + 1068327322.

It is an arithmetic number, because the mean of its divisors is an integer number (1068327322).

Almost surely, 2^2136654643 is an apocalyptic number.

2136654643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2136654643 is an equidigital number, since it uses as much as digits as its factorization.

2136654643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 40.

The square root of 2136654643 is about 46223.9617839060. The cubic root of 2136654643 is about 1287.9868933362.

The spelling of 2136654643 in words is "two billion, one hundred thirty-six million, six hundred fifty-four thousand, six hundred forty-three".