3876164681 has 4 divisors (see below), whose sum is σ = 3876551700. Its totient is φ = 3875777664.

The previous prime is 3876164651. The next prime is 3876164687. The reversal of 3876164681 is 1864616783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2868673600 + 1007491081 = 53560^2 + 31741^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3876164681 is a prime.

It is a super-4 number, since 4×3876164681⁴ (a number of 39 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3876164687) 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, 178076 + ... + 198653.

It is an arithmetic number, because the mean of its divisors is an integer number (969137925).

Almost surely, 2^3876164681 is an apocalyptic number.

It is an amenable number.

3876164681 is a deficient number, since it is larger than the sum of its proper divisors (387019).

3876164681 is a wasteful number, since it uses less digits than its factorization.

3876164681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387018.

The product of its digits is 1161216, while the sum is 50.

The square root of 3876164681 is about 62258.8522300243. The cubic root of 3876164681 is about 1570.8476741468.

The spelling of 3876164681 in words is "three billion, eight hundred seventy-six million, one hundred sixty-four thousand, six hundred eighty-one".