3961866508 has 6 divisors (see below), whose sum is σ = 6933266396. Its totient is φ = 1980933252.

The previous prime is 3961866499. The next prime is 3961866539. The reversal of 3961866508 is 8056681693.

It is a super-2 number, since 2×3961866508² = 31392772454424228128, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495233310 + ... + 495233317.

Almost surely, 2^3961866508 is an apocalyptic number.

It is an amenable number.

3961866508 is a deficient number, since it is larger than the sum of its proper divisors (2971399888).

3961866508 is a wasteful number, since it uses less digits than its factorization.

3961866508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990466631 (or 990466629 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 52.

The square root of 3961866508 is about 62943.3595226693. The cubic root of 3961866508 is about 1582.3405076074.

The spelling of 3961866508 in words is "three billion, nine hundred sixty-one million, eight hundred sixty-six thousand, five hundred eight".