3684137652 has 72 divisors (see below), whose sum is σ = 10121191080. Its totient is φ = 1123165440.

The previous prime is 3684137621. The next prime is 3684137663. The reversal of 3684137652 is 2567314863.

It can be written as a sum of positive squares in 4 ways, for example, as 79816356 + 3604321296 = 8934^2 + 60036^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3684137598 and 3684137607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14902 + ... + 87122.

Almost surely, 2^3684137652 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 3684137652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5060595540).

3684137652 is an abundant number, since it is smaller than the sum of its proper divisors (6437053428).

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

3684137652 is a wasteful number, since it uses less digits than its factorization.

3684137652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72353 (or 72348 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 3684137652 is about 60697.0975582853. The cubic root of 3684137652 is about 1544.4669389858.

The spelling of 3684137652 in words is "three billion, six hundred eighty-four million, one hundred thirty-seven thousand, six hundred fifty-two".