2136836643 has 16 divisors (see below), whose sum is σ = 2990808576. Its totient is φ = 1354453760.

The previous prime is 2136836629. The next prime is 2136836659. The reversal of 2136836643 is 3466386312.

It is a cyclic number.

It is not a de Polignac number, because 2136836643 - 2¹⁶ = 2136771107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2136836595 and 2136836604.

It is not an unprimeable number, because it can be changed into a prime (2136836693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81198 + ... + 104243.

It is an arithmetic number, because the mean of its divisors is an integer number (186925536).

Almost surely, 2^2136836643 is an apocalyptic number.

2136836643 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2136836643 is a deficient number, since it is larger than the sum of its proper divisors (853971933).

2136836643 is a wasteful number, since it uses less digits than its factorization.

2136836643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185634.

The product of its digits is 373248, while the sum is 42.

The square root of 2136836643 is about 46225.9304178942. The cubic root of 2136836643 is about 1288.0234624904.

The spelling of 2136836643 in words is "two billion, one hundred thirty-six million, eight hundred thirty-six thousand, six hundred forty-three".