8105693885 has 4 divisors (see below), whose sum is σ = 9726832668. Its totient is φ = 6484555104.

The previous prime is 8105693861. The next prime is 8105693909. The reversal of 8105693885 is 5883965018.

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

It is an interprime number because it is at equal distance from previous prime (8105693861) and next prime (8105693909).

It can be written as a sum of positive squares in 2 ways, for example, as 6037445401 + 2068248484 = 77701^2 + 45478^2 .

It is a cyclic number.

It is not a de Polignac number, because 8105693885 - 2⁶ = 8105693821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 810569384 + ... + 810569393.

It is an arithmetic number, because the mean of its divisors is an integer number (2431708167).

Almost surely, 2^8105693885 is an apocalyptic number.

It is an amenable number.

8105693885 is a deficient number, since it is larger than the sum of its proper divisors (1621138783).

8105693885 is a wasteful number, since it uses less digits than its factorization.

8105693885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621138782.

The product of its (nonzero) digits is 2073600, while the sum is 53.

The square root of 8105693885 is about 90031.6271373566. The cubic root of 8105693885 is about 2008.7693170915.

The spelling of 8105693885 in words is "eight billion, one hundred five million, six hundred ninety-three thousand, eight hundred eighty-five".