2136636684 has 192 divisors, whose sum is σ = 7038689280. Its totient is φ = 545253120.

The previous prime is 2136636661. The next prime is 2136636703. The reversal of 2136636684 is 4866366312.

2136636684 is a `hidden beast` number, since 2 + 1 + 3 + 6 + 636 + 6 + 8 + 4 = 666.

It is an unprimeable number.

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 in 63 ways as a sum of consecutive naturals, for example, 301162 + ... + 308174.

It is an arithmetic number, because the mean of its divisors is an integer number (36659840).

Almost surely, 2^2136636684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2136636684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3519344640).

2136636684 is an abundant number, since it is smaller than the sum of its proper divisors (4902052596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2136636684 is a wasteful number, since it uses less digits than its factorization.

2136636684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7077 (or 7069 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The square root of 2136636684 is about 46223.7675227799. The cubic root of 2136636684 is about 1287.9832847322.

The spelling of 2136636684 in words is "two billion, one hundred thirty-six million, six hundred thirty-six thousand, six hundred eighty-four".