3261443816 has 16 divisors (see below), whose sum is σ = 6119863200. Its totient is φ = 1629480304.

The previous prime is 3261443807. The next prime is 3261443891. The reversal of 3261443816 is 6183441623.

It is a happy number.

3261443816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3261443816.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143990 + ... + 165093.

It is an arithmetic number, because the mean of its divisors is an integer number (382491450).

Almost surely, 2^3261443816 is an apocalyptic number.

It is an amenable number.

3261443816 is a deficient number, since it is larger than the sum of its proper divisors (2858419384).

3261443816 is a wasteful number, since it uses less digits than its factorization.

3261443816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310408 (or 310404 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The square root of 3261443816 is about 57109.0519620139. The cubic root of 3261443816 is about 1482.9845750061.

The spelling of 3261443816 in words is "three billion, two hundred sixty-one million, four hundred forty-three thousand, eight hundred sixteen".