3639123648 has 42 divisors (see below), whose sum is σ = 10430892524. Its totient is φ = 1213041024.

The previous prime is 3639123643. The next prime is 3639123679. The reversal of 3639123648 is 8463219363.

3639123648 is a `hidden beast` number, since 3 + 639 + 1 + 2 + 3 + 6 + 4 + 8 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (3639123643) 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, 3158386 + ... + 3159537.

Almost surely, 2^3639123648 is an apocalyptic number.

It is an amenable number.

3639123648 is an abundant number, since it is smaller than the sum of its proper divisors (6791768876).

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

3639123648 is a wasteful number, since it uses less digits than its factorization.

3639123648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6317941 (or 6317928 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 3639123648 is about 60325.1493823264. The cubic root of 3639123648 is about 1538.1508766733.

The spelling of 3639123648 in words is "three billion, six hundred thirty-nine million, one hundred twenty-three thousand, six hundred forty-eight".