3681726012 has 144 divisors (see below), whose sum is σ = 10038712320. Its totient is φ = 1134929664.

The previous prime is 3681725987. The next prime is 3681726029. The reversal of 3681726012 is 2106271863.

3681726012 is a `hidden beast` number, since 36 + 8 + 17 + 2 + 601 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 3462993 + ... + 3464055.

It is an arithmetic number, because the mean of its divisors is an integer number (69713280).

Almost surely, 2^3681726012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3681726012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5019356160).

3681726012 is an abundant number, since it is smaller than the sum of its proper divisors (6356986308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3681726012 is a wasteful number, since it uses less digits than its factorization.

3681726012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232 (or 1227 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 3681726012 is about 60677.2281173094. The cubic root of 3681726012 is about 1544.1298622506.

Adding to 3681726012 its reverse (2106271863), we get a palindrome (5787997875).

The spelling of 3681726012 in words is "three billion, six hundred eighty-one million, seven hundred twenty-six thousand, twelve".