3685918320 has 120 divisors (see below), whose sum is σ = 14146924896. Its totient is φ = 842494464.

The previous prime is 3685918297. The next prime is 3685918331. The reversal of 3685918320 is 238195863.

It is a happy number.

3685918320 is a `hidden beast` number, since 36 + 8 + 591 + 8 + 3 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 360627 + ... + 370706.

Almost surely, 2^3685918320 is an apocalyptic number.

3685918320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3685918320 is an abundant number, since it is smaller than the sum of its proper divisors (10461006576).

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

3685918320 is a wasteful number, since it uses less digits than its factorization.

3685918320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731359 (or 731350 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 3685918320 is about 60711.7642636087. The cubic root of 3685918320 is about 1544.7157298968.

The spelling of 3685918320 in words is "three billion, six hundred eighty-five million, nine hundred eighteen thousand, three hundred twenty".