2136243568 has 20 divisors (see below), whose sum is σ = 4356813160. Its totient is φ = 1011904704.

The previous prime is 2136243553. The next prime is 2136243649. The reversal of 2136243568 is 8653426312.

It is a self number, because there is not a number n which added to its sum of digits gives 2136243568.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3513255 + ... + 3513862.

It is an arithmetic number, because the mean of its divisors is an integer number (217840658).

Almost surely, 2^2136243568 is an apocalyptic number.

It is an amenable number.

2136243568 is an abundant number, since it is smaller than the sum of its proper divisors (2220569592).

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

2136243568 is a wasteful number, since it uses less digits than its factorization.

2136243568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7027144 (or 7027138 counting only the distinct ones).

The product of its digits is 207360, while the sum is 40.

The square root of 2136243568 is about 46219.5150126005. The cubic root of 2136243568 is about 1287.9042886326.

The spelling of 2136243568 in words is "two billion, one hundred thirty-six million, two hundred forty-three thousand, five hundred sixty-eight".