3281690636 has 12 divisors (see below), whose sum is σ = 6563381328. Its totient is φ = 1406438832.

The previous prime is 3281690611. The next prime is 3281690639. The reversal of 3281690636 is 6360961823.

3281690636 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (3281690639) 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, 58601591 + ... + 58601646.

It is an arithmetic number, because the mean of its divisors is an integer number (546948444).

Almost surely, 2^3281690636 is an apocalyptic number.

It is an amenable number.

3281690636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3281690636 is a wasteful number, since it uses less digits than its factorization.

3281690636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117203248 (or 117203246 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 3281690636 is about 57286.0422441628. The cubic root of 3281690636 is about 1486.0470021911.

The spelling of 3281690636 in words is "three billion, two hundred eighty-one million, six hundred ninety thousand, six hundred thirty-six".