3880168681 has 9 divisors (see below), whose sum is σ = 3914035671. Its totient is φ = 3846593832.

The previous prime is 3880168639. The next prime is 3880168687. The reversal of 3880168681 is 1868610883.

The square root of 3880168681 is 62291.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2109105625 + 1771063056 = 45925^2 + 42084^2 .

It is not a de Polignac number, because 3880168681 - 2⁹ = 3880168169 is a prime.

It is a super-2 number, since 2×3880168681² = 30111417986026559522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3880168687) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10402411 + ... + 10402783.

Almost surely, 2^3880168681 is an apocalyptic number.

3880168681 is the 62291-st square number.

3880168681 is the 31146-th centered octagonal number.

It is an amenable number.

3880168681 is a deficient number, since it is larger than the sum of its proper divisors (33866990).

3880168681 is an frugal number, since it uses more digits than its factorization.

3880168681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 49.

The cubic root of 3880168681 is about 1571.3883726761.

Multiplying 3880168681 by its sum of digits (49), we get a square (190128265369 = 436037²).

The spelling of 3880168681 in words is "three billion, eight hundred eighty million, one hundred sixty-eight thousand, six hundred eighty-one".