3851373681 has 48 divisors (see below), whose sum is σ = 6117845760. Its totient is φ = 2323883520.

The previous prime is 3851373641. The next prime is 3851373683. The reversal of 3851373681 is 1863731583.

3851373681 is a `hidden beast` number, since 3 + 8 + 513 + 73 + 68 + 1 = 666.

It is not a de Polignac number, because 3851373681 - 2¹⁴ = 3851357297 is a prime.

It is a super-2 number, since 2×3851373681² = 29666158461398979522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3851373683) 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 47 ways as a sum of consecutive naturals, for example, 1200826 + ... + 1204028.

It is an arithmetic number, because the mean of its divisors is an integer number (127455120).

Almost surely, 2^3851373681 is an apocalyptic number.

It is an amenable number.

3851373681 is a deficient number, since it is larger than the sum of its proper divisors (2266472079).

3851373681 is a wasteful number, since it uses less digits than its factorization.

3851373681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3526 (or 3523 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 3851373681 is about 62059.4366796864. The cubic root of 3851373681 is about 1567.4915900436.

The spelling of 3851373681 in words is "three billion, eight hundred fifty-one million, three hundred seventy-three thousand, six hundred eighty-one".