3681658610 has 24 divisors (see below), whose sum is σ = 7708943340. Its totient is φ = 1262282784.

The previous prime is 3681658597. The next prime is 3681658613. The reversal of 3681658610 is 168561863.

It can be written as a sum of positive squares in 2 ways, for example, as 3673935769 + 7722841 = 60613^2 + 2779^2 .

It is a super-2 number, since 2×3681658610² = 27109220241174264200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3681658613) 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 11 ways as a sum of consecutive naturals, for example, 3756305 + ... + 3757284.

Almost surely, 2^3681658610 is an apocalyptic number.

3681658610 is an abundant number, since it is smaller than the sum of its proper divisors (4027284730).

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

3681658610 is a wasteful number, since it uses less digits than its factorization.

3681658610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7513610 (or 7513603 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 3681658610 is about 60676.6727004703. The cubic root of 3681658610 is about 1544.1204393082.

The spelling of 3681658610 in words is "three billion, six hundred eighty-one million, six hundred fifty-eight thousand, six hundred ten".