2136309685 has 8 divisors (see below), whose sum is σ = 2569522176. Its totient is φ = 1705080720.

The previous prime is 2136309661. The next prime is 2136309697. The reversal of 2136309685 is 5869036312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2136309685 - 2⁵ = 2136309653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 493509 + ... + 497818.

It is an arithmetic number, because the mean of its divisors is an integer number (321190272).

Almost surely, 2^2136309685 is an apocalyptic number.

It is an amenable number.

2136309685 is a deficient number, since it is larger than the sum of its proper divisors (433212491).

2136309685 is an equidigital number, since it uses as much as digits as its factorization.

2136309685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991763.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 2136309685 is about 46220.2302568908. The cubic root of 2136309685 is about 1287.9175754274.

The spelling of 2136309685 in words is "two billion, one hundred thirty-six million, three hundred nine thousand, six hundred eighty-five".