3808069561 has 4 divisors (see below), whose sum is σ = 3808206324. Its totient is φ = 3807932800.

The previous prime is 3808069541. The next prime is 3808069571. The reversal of 3808069561 is 1659608083.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 720600336 + 3087469225 = 26844^2 + 55565^2 .

It is a cyclic number.

It is not a de Polignac number, because 3808069561 - 2²¹ = 3805972409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3808069501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10000 + ... + 87841.

It is an arithmetic number, because the mean of its divisors is an integer number (952051581).

Almost surely, 2^3808069561 is an apocalyptic number.

It is an amenable number.

3808069561 is a deficient number, since it is larger than the sum of its proper divisors (136763).

3808069561 is an equidigital number, since it uses as much as digits as its factorization.

3808069561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136762.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 3808069561 is about 61709.5581008323. The cubic root of 3808069561 is about 1561.5945728256.

The spelling of 3808069561 in words is "three billion, eight hundred eight million, sixty-nine thousand, five hundred sixty-one".