3331865821 has 8 divisors (see below), whose sum is σ = 3522682080. Its totient is φ = 3142595088.

The previous prime is 3331865807. The next prime is 3331865837. The reversal of 3331865821 is 1285681333.

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 3331865821 - 2¹⁵ = 3331833053 is a prime.

It is a super-3 number, since 3×3331865821³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3331865521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381946 + ... + 390571.

It is an arithmetic number, because the mean of its divisors is an integer number (440335260).

Almost surely, 2^3331865821 is an apocalyptic number.

It is an amenable number.

3331865821 is a deficient number, since it is larger than the sum of its proper divisors (190816259).

3331865821 is a wasteful number, since it uses less digits than its factorization.

3331865821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772763.

The product of its digits is 103680, while the sum is 40.

The square root of 3331865821 is about 57722.3164902449. The cubic root of 3331865821 is about 1493.5823327829.

The spelling of 3331865821 in words is "three billion, three hundred thirty-one million, eight hundred sixty-five thousand, eight hundred twenty-one".