3639946612 has 12 divisors (see below), whose sum is σ = 6418532736. Its totient is φ = 1806080120.

The previous prime is 3639946579. The next prime is 3639946613. The reversal of 3639946612 is 2166499363.

It is a super-2 number, since 2×3639946612² = 26498422676420557088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3639946613) 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, 3472708 + ... + 3473755.

It is an arithmetic number, because the mean of its divisors is an integer number (534877728).

Almost surely, 2^3639946612 is an apocalyptic number.

It is an amenable number.

3639946612 is a deficient number, since it is larger than the sum of its proper divisors (2778586124).

3639946612 is a wasteful number, since it uses less digits than its factorization.

3639946612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6946598 (or 6946596 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 49.

The square root of 3639946612 is about 60331.9700656294. The cubic root of 3639946612 is about 1538.2668155193.

The spelling of 3639946612 in words is "three billion, six hundred thirty-nine million, nine hundred forty-six thousand, six hundred twelve".