2136944636 has 24 divisors (see below), whose sum is σ = 3763561200. Its totient is φ = 1061655552.

The previous prime is 2136944633. The next prime is 2136944701. The reversal of 2136944636 is 6364496312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136944633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194935 + ... + 1196721.

It is an arithmetic number, because the mean of its divisors is an integer number (156815050).

Almost surely, 2^2136944636 is an apocalyptic number.

It is an amenable number.

2136944636 is a deficient number, since it is larger than the sum of its proper divisors (1626616564).

2136944636 is a wasteful number, since it uses less digits than its factorization.

2136944636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533 (or 3531 counting only the distinct ones).

The product of its digits is 559872, while the sum is 44.

The square root of 2136944636 is about 46227.0985029344. The cubic root of 2136944636 is about 1288.0451604795.

The spelling of 2136944636 in words is "two billion, one hundred thirty-six million, nine hundred forty-four thousand, six hundred thirty-six".