3806812691 has 16 divisors (see below), whose sum is σ = 4227914880. Its totient is φ = 3398345280.

The previous prime is 3806812663. The next prime is 3806812717. The reversal of 3806812691 is 1962186083.

3806812691 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3806812691 - 2¹⁴ = 3806796307 is a prime.

It is a super-2 number, since 2×3806812691² = 28983645728717322962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3806812631) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 709280 + ... + 714626.

It is an arithmetic number, because the mean of its divisors is an integer number (264244680).

Almost surely, 2^3806812691 is an apocalyptic number.

3806812691 is a deficient number, since it is larger than the sum of its proper divisors (421102189).

3806812691 is a wasteful number, since it uses less digits than its factorization.

3806812691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6514.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 3806812691 is about 61699.3735057334. The cubic root of 3806812691 is about 1561.4227502163.

The spelling of 3806812691 in words is "three billion, eight hundred six million, eight hundred twelve thousand, six hundred ninety-one".