3281565916 has 12 divisors (see below), whose sum is σ = 5743266088. Its totient is φ = 1640632752.

The previous prime is 3281565907. The next prime is 3281565929. The reversal of 3281565916 is 6195651823.

3281565916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3281565916² = 21537349722105838112, which contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 22150 + ... + 83986.

Almost surely, 2^3281565916 is an apocalyptic number.

It is an amenable number.

3281565916 is a deficient number, since it is larger than the sum of its proper divisors (2461700172).

3281565916 is a wasteful number, since it uses less digits than its factorization.

3281565916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75108 (or 75106 counting only the distinct ones).

The product of its digits is 388800, while the sum is 46.

The square root of 3281565916 is about 57284.9536614982. The cubic root of 3281565916 is about 1486.0281763124.

The spelling of 3281565916 in words is "three billion, two hundred eighty-one million, five hundred sixty-five thousand, nine hundred sixteen".