3681771863 has 16 divisors (see below), whose sum is σ = 4653148416. Its totient is φ = 2829608640.

The previous prime is 3681771859. The next prime is 3681771869.

3681771863 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 3681771863 - 2² = 3681771859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3681771869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321881 + ... + 333122.

It is an arithmetic number, because the mean of its divisors is an integer number (290821776).

Almost surely, 2^3681771863 is an apocalyptic number.

3681771863 is a deficient number, since it is larger than the sum of its proper divisors (971376553).

3681771863 is a wasteful number, since it uses less digits than its factorization.

3681771863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655094.

The product of its digits is 1016064, while the sum is 50.

The square root of 3681771863 is about 60677.6059432143. The cubic root of 3681771863 is about 1544.1362722518.

The spelling of 3681771863 in words is "three billion, six hundred eighty-one million, seven hundred seventy-one thousand, eight hundred sixty-three".