3866681631 has 8 divisors (see below), whose sum is σ = 5156099200. Its totient is φ = 2577525912.

The previous prime is 3866681597. The next prime is 3866681641. The reversal of 3866681631 is 1361866683.

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

It is not a de Polignac number, because 3866681631 - 2¹⁰ = 3866680607 is a prime.

It is a super-2 number, since 2×3866681631² = 29902453671025640322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3866681641) 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, 27931 + ... + 92268.

It is an arithmetic number, because the mean of its divisors is an integer number (644512400).

Almost surely, 2^3866681631 is an apocalyptic number.

3866681631 is a deficient number, since it is larger than the sum of its proper divisors (1289417569).

3866681631 is a wasteful number, since it uses less digits than its factorization.

3866681631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130925.

The product of its digits is 746496, while the sum is 48.

The square root of 3866681631 is about 62182.6473463457. The cubic root of 3866681631 is about 1569.5655999958.

The spelling of 3866681631 in words is "three billion, eight hundred sixty-six million, six hundred eighty-one thousand, six hundred thirty-one".