3686443240 has 16 divisors (see below), whose sum is σ = 8294497380. Its totient is φ = 1474577280.

The previous prime is 3686443223. The next prime is 3686443259. The reversal of 3686443240 is 423446863.

It can be written as a sum of positive squares in 2 ways, for example, as 3435600996 + 250842244 = 58614^2 + 15838^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 92161081 = 3686443240 / (3 + 6 + 8 + 6 + 4 + 4 + 3 + 2 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 3686443193 and 3686443202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46080501 + ... + 46080580.

Almost surely, 2^3686443240 is an apocalyptic number.

It is an amenable number.

3686443240 is an abundant number, since it is smaller than the sum of its proper divisors (4608054140).

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

3686443240 is a wasteful number, since it uses less digits than its factorization.

3686443240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92161092 (or 92161088 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 40.

The square root of 3686443240 is about 60716.0871598294. The cubic root of 3686443240 is about 1544.7890552414.

The spelling of 3686443240 in words is "three billion, six hundred eighty-six million, four hundred forty-three thousand, two hundred forty".