3806616609 has 36 divisors (see below), whose sum is σ = 5624739120. Its totient is φ = 2480621760.

The previous prime is 3806616599. The next prime is 3806616623. The reversal of 3806616609 is 9066166083.

3806616609 is a `hidden beast` number, since 38 + 0 + 6 + 6 + 1 + 6 + 609 = 666.

It is not a de Polignac number, because 3806616609 - 2¹⁹ = 3806092321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3806616109) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6666294 + ... + 6666864.

Almost surely, 2^3806616609 is an apocalyptic number.

It is an amenable number.

3806616609 is a deficient number, since it is larger than the sum of its proper divisors (1818122511).

3806616609 is a wasteful number, since it uses less digits than its factorization.

3806616609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862 (or 786 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 3806616609 is about 61697.7844739987. The cubic root of 3806616609 is about 1561.3959410737.

The spelling of 3806616609 in words is "three billion, eight hundred six million, six hundred sixteen thousand, six hundred nine".