3866677891 has 8 divisors (see below), whose sum is σ = 3911822640. Its totient is φ = 3821571072.

The previous prime is 3866677879. The next prime is 3866677951. The reversal of 3866677891 is 1987766683.

3866677891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3866677891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3866677391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230691 + ... + 246883.

It is an arithmetic number, because the mean of its divisors is an integer number (488977830).

Almost surely, 2^3866677891 is an apocalyptic number.

3866677891 is a deficient number, since it is larger than the sum of its proper divisors (45144749).

3866677891 is a wasteful number, since it uses less digits than its factorization.

3866677891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18965.

The product of its digits is 18289152, while the sum is 61.

The square root of 3866677891 is about 62182.6172736401. The cubic root of 3866677891 is about 1569.5650939480.

The spelling of 3866677891 in words is "three billion, eight hundred sixty-six million, six hundred seventy-seven thousand, eight hundred ninety-one".