3643939336 has 16 divisors (see below), whose sum is σ = 6838037100. Its totient is φ = 1820462784.

The previous prime is 3643939333. The next prime is 3643939357. The reversal of 3643939336 is 6339393463.

It can be written as a sum of positive squares in 2 ways, for example, as 2787206436 + 856732900 = 52794^2 + 29270^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3643939336.

It is not an unprimeable number, because it can be changed into a prime (3643939333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178051 + ... + 197458.

Almost surely, 2^3643939336 is an apocalyptic number.

It is an amenable number.

3643939336 is a deficient number, since it is larger than the sum of its proper divisors (3194097764).

3643939336 is a wasteful number, since it uses less digits than its factorization.

3643939336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376728 (or 376724 counting only the distinct ones).

The product of its digits is 2834352, while the sum is 49.

The square root of 3643939336 is about 60365.0506170582. The cubic root of 3643939336 is about 1538.8290609900.

The spelling of 3643939336 in words is "three billion, six hundred forty-three million, nine hundred thirty-nine thousand, three hundred thirty-six".