3872779281 has 24 divisors (see below), whose sum is σ = 6416953920. Its totient is φ = 2204780256.

The previous prime is 3872779237. The next prime is 3872779289. The reversal of 3872779281 is 1829772783.

It is not a de Polignac number, because 3872779281 - 2⁷ = 3872779153 is a prime.

It is a super-2 number, since 2×3872779281² = 29996838718685753922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3872779289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97315 + ... + 131208.

It is an arithmetic number, because the mean of its divisors is an integer number (267373080).

Almost surely, 2^3872779281 is an apocalyptic number.

It is an amenable number.

3872779281 is a deficient number, since it is larger than the sum of its proper divisors (2544174639).

3872779281 is a wasteful number, since it uses less digits than its factorization.

3872779281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228805 (or 228802 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 54.

The square root of 3872779281 is about 62231.6581893814. The cubic root of 3872779281 is about 1570.3902205281.

The spelling of 3872779281 in words is "three billion, eight hundred seventy-two million, seven hundred seventy-nine thousand, two hundred eighty-one".