3685168520 has 32 divisors (see below), whose sum is σ = 9045414720. Its totient is φ = 1340061120.

The previous prime is 3685168511. The next prime is 3685168559. The reversal of 3685168520 is 258615863.

It is a Harshad number since it is a multiple of its sum of digits (44).

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 7 ways as a sum of consecutive naturals, for example, 4187252 + ... + 4188131.

It is an arithmetic number, because the mean of its divisors is an integer number (282669210).

Almost surely, 2^3685168520 is an apocalyptic number.

It is an amenable number.

3685168520 is an abundant number, since it is smaller than the sum of its proper divisors (5360246200).

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

3685168520 is a wasteful number, since it uses less digits than its factorization.

3685168520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8375405 (or 8375401 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 3685168520 is about 60705.5888695596. The cubic root of 3685168520 is about 1544.6109793029.

The spelling of 3685168520 in words is "three billion, six hundred eighty-five million, one hundred sixty-eight thousand, five hundred twenty".