3806810641 has 4 divisors (see below), whose sum is σ = 3811348800. Its totient is φ = 3802272484.

The previous prime is 3806810611. The next prime is 3806810659. The reversal of 3806810641 is 1460186083.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3806810641 - 2⁹ = 3806810129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3806810641.

It is not an unprimeable number, because it can be changed into a prime (3806810611) 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, 2267821 + ... + 2269498.

It is an arithmetic number, because the mean of its divisors is an integer number (952837200).

Almost surely, 2^3806810641 is an apocalyptic number.

It is an amenable number.

3806810641 is a deficient number, since it is larger than the sum of its proper divisors (4538159).

3806810641 is an equidigital number, since it uses as much as digits as its factorization.

3806810641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4538158.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 3806810641 is about 61699.3568929207. The cubic root of 3806810641 is about 1561.4224699366.

The spelling of 3806810641 in words is "three billion, eight hundred six million, eight hundred ten thousand, six hundred forty-one".