3865078885 has 4 divisors (see below), whose sum is σ = 4638094668. Its totient is φ = 3092063104.

The previous prime is 3865078883. The next prime is 3865078891. The reversal of 3865078885 is 5888705683.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3020711521 + 844367364 = 54961^2 + 29058^2 .

It is a cyclic number.

It is not a de Polignac number, because 3865078885 - 2¹ = 3865078883 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 (3865078883) 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, 386507884 + ... + 386507893.

It is an arithmetic number, because the mean of its divisors is an integer number (1159523667).

Almost surely, 2^3865078885 is an apocalyptic number.

It is an amenable number.

3865078885 is a deficient number, since it is larger than the sum of its proper divisors (773015783).

3865078885 is an equidigital number, since it uses as much as digits as its factorization.

3865078885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773015782.

The product of its (nonzero) digits is 12902400, while the sum is 58.

The square root of 3865078885 is about 62169.7586049681. The cubic root of 3865078885 is about 1569.3487075039.

The spelling of 3865078885 in words is "three billion, eight hundred sixty-five million, seventy-eight thousand, eight hundred eighty-five".