3281855813 has 8 divisors (see below), whose sum is σ = 3289180128. Its totient is φ = 3274541424.

The previous prime is 3281855741. The next prime is 3281855833. The reversal of 3281855813 is 3185581823.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3281855813 - 2¹⁰ = 3281854789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3281855833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1211006 + ... + 1213712.

It is an arithmetic number, because the mean of its divisors is an integer number (411147516).

Almost surely, 2^3281855813 is an apocalyptic number.

It is an amenable number.

3281855813 is a deficient number, since it is larger than the sum of its proper divisors (7324315).

3281855813 is a wasteful number, since it uses less digits than its factorization.

3281855813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4963.

The product of its digits is 230400, while the sum is 44.

The square root of 3281855813 is about 57287.4839122823. The cubic root of 3281855813 is about 1486.0719341235.

The spelling of 3281855813 in words is "three billion, two hundred eighty-one million, eight hundred fifty-five thousand, eight hundred thirteen".