3688312340 has 12 divisors (see below), whose sum is σ = 7745455956. Its totient is φ = 1475324928.

The previous prime is 3688312337. The next prime is 3688312349. The reversal of 3688312340 is 432138863.

It can be written as a sum of positive squares in 2 ways, for example, as 1511343376 + 2176968964 = 38876^2 + 46658^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3688312294 and 3688312303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3688312349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92207789 + ... + 92207828.

It is an arithmetic number, because the mean of its divisors is an integer number (645454663).

Almost surely, 2^3688312340 is an apocalyptic number.

It is an amenable number.

3688312340 is an abundant number, since it is smaller than the sum of its proper divisors (4057143616).

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

3688312340 is a wasteful number, since it uses less digits than its factorization.

3688312340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184415626 (or 184415624 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 3688312340 is about 60731.4773408321. The cubic root of 3688312340 is about 1545.0500907155.

The spelling of 3688312340 in words is "three billion, six hundred eighty-eight million, three hundred twelve thousand, three hundred forty".