3786856671 has 16 divisors (see below), whose sum is σ = 5473556480. Its totient is φ = 2314936800.

The previous prime is 3786856631. The next prime is 3786856691. The reversal of 3786856671 is 1766586873.

It is not a de Polignac number, because 3786856671 - 2¹¹ = 3786854623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3786856621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315631 + ... + 327408.

It is an arithmetic number, because the mean of its divisors is an integer number (342097280).

Almost surely, 2^3786856671 is an apocalyptic number.

3786856671 is a deficient number, since it is larger than the sum of its proper divisors (1686699809).

3786856671 is a wasteful number, since it uses less digits than its factorization.

3786856671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643206.

The product of its digits is 10160640, while the sum is 57.

The square root of 3786856671 is about 61537.4412126471. The cubic root of 3786856671 is about 1558.6895458488.

The spelling of 3786856671 in words is "three billion, seven hundred eighty-six million, eight hundred fifty-six thousand, six hundred seventy-one".