2043636768 has 36 divisors (see below), whose sum is σ = 5811592878. Its totient is φ = 681212160.

The previous prime is 2043636761. The next prime is 2043636769. The reversal of 2043636768 is 8676363402.

2043636768 is a `hidden beast` number, since 2 + 0 + 4 + 3 + 636 + 7 + 6 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1732890384 + 310746384 = 41628^2 + 17628^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (2043636761) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3547693 + ... + 3548268.

Almost surely, 2^2043636768 is an apocalyptic number.

It is an amenable number.

2043636768 is an abundant number, since it is smaller than the sum of its proper divisors (3767956110).

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

2043636768 is a wasteful number, since it uses less digits than its factorization.

2043636768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7095977 (or 7095966 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The square root of 2043636768 is about 45206.6009339344. The cubic root of 2043636768 is about 1269.0183515203.

The spelling of 2043636768 in words is "two billion, forty-three million, six hundred thirty-six thousand, seven hundred sixty-eight".