3681156843 has 48 divisors (see below), whose sum is σ = 6888743680. Its totient is φ = 1839506112.

The previous prime is 3681156839. The next prime is 3681156859. The reversal of 3681156843 is 3486511863.

3681156843 is a `hidden beast` number, since 3 + 6 + 81 + 1 + 568 + 4 + 3 = 666.

It is not a de Polignac number, because 3681156843 - 2² = 3681156839 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3681156803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 102721 + ... + 133842.

Almost surely, 2^3681156843 is an apocalyptic number.

3681156843 is a deficient number, since it is larger than the sum of its proper divisors (3207586837).

3681156843 is a wasteful number, since it uses less digits than its factorization.

3681156843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236608 (or 236605 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 3681156843 is about 60672.5377992383. The cubic root of 3681156843 is about 1544.0502876037.

The spelling of 3681156843 in words is "three billion, six hundred eighty-one million, one hundred fifty-six thousand, eight hundred forty-three".