3681718319 has 8 divisors (see below), whose sum is σ = 3689287680. Its totient is φ = 3674158776.

The previous prime is 3681718301. The next prime is 3681718343. The reversal of 3681718319 is 9138171863.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3681718319 - 2⁸ = 3681718063 is a prime.

It is a super-2 number, since 2×3681718319² = 27110099560920371522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3681718349) 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 7 ways as a sum of consecutive naturals, for example, 1543802 + ... + 1546184.

It is an arithmetic number, because the mean of its divisors is an integer number (461160960).

Almost surely, 2^3681718319 is an apocalyptic number.

3681718319 is a deficient number, since it is larger than the sum of its proper divisors (7569361).

3681718319 is a wasteful number, since it uses less digits than its factorization.

3681718319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4909.

The product of its digits is 217728, while the sum is 47.

The square root of 3681718319 is about 60677.1647244662. The cubic root of 3681718319 is about 1544.1287867587.

The spelling of 3681718319 in words is "three billion, six hundred eighty-one million, seven hundred eighteen thousand, three hundred nineteen".