3875805865 has 8 divisors (see below), whose sum is σ = 4716474048. Its totient is φ = 3056973360.

The previous prime is 3875805853. The next prime is 3875805887. The reversal of 3875805865 is 5685085783.

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

It is not a de Polignac number, because 3875805865 - 2⁷ = 3875805737 is a prime.

It is a super-2 number, since 2×3875805865² = 30043742206336796450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5458527 + ... + 5459236.

It is an arithmetic number, because the mean of its divisors is an integer number (589559256).

Almost surely, 2^3875805865 is an apocalyptic number.

It is an amenable number.

3875805865 is a deficient number, since it is larger than the sum of its proper divisors (840668183).

3875805865 is a wasteful number, since it uses less digits than its factorization.

3875805865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10917839.

The product of its (nonzero) digits is 8064000, while the sum is 55.

The square root of 3875805865 is about 62255.9705168910. The cubic root of 3875805865 is about 1570.7992016043.

The spelling of 3875805865 in words is "three billion, eight hundred seventy-five million, eight hundred five thousand, eight hundred sixty-five".