3866809101 has 4 divisors (see below), whose sum is σ = 5155745472. Its totient is φ = 2577872732.

The previous prime is 3866809081. The next prime is 3866809147. The reversal of 3866809101 is 1019086683.

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 3866809101 - 2⁷ = 3866808973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3866809501) 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, 644468181 + ... + 644468186.

It is an arithmetic number, because the mean of its divisors is an integer number (1288936368).

Almost surely, 2^3866809101 is an apocalyptic number.

It is an amenable number.

3866809101 is a deficient number, since it is larger than the sum of its proper divisors (1288936371).

3866809101 is a wasteful number, since it uses less digits than its factorization.

3866809101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288936370.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 3866809101 is about 62183.6723023013. The cubic root of 3866809101 is about 1569.5828473712.

The spelling of 3866809101 in words is "three billion, eight hundred sixty-six million, eight hundred nine thousand, one hundred one".