3911996646 has 12 divisors (see below), whose sum is σ = 8475992772. Its totient is φ = 1303998876.

The previous prime is 3911996629. The next prime is 3911996657. The reversal of 3911996646 is 6466991193.

3911996646 is a `hidden beast` number, since 391 + 199 + 6 + 64 + 6 = 666.

3911996646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3911996592 and 3911996601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108666556 + ... + 108666591.

It is an arithmetic number, because the mean of its divisors is an integer number (706332731).

Almost surely, 2^3911996646 is an apocalyptic number.

3911996646 is an abundant number, since it is smaller than the sum of its proper divisors (4563996126).

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

3911996646 is a wasteful number, since it uses less digits than its factorization.

3911996646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217333155 (or 217333152 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The square root of 3911996646 is about 62545.9562721684. The cubic root of 3911996646 is about 1575.6732347845.

The spelling of 3911996646 in words is "three billion, nine hundred eleven million, nine hundred ninety-six thousand, six hundred forty-six".