3687921968 has 20 divisors (see below), whose sum is σ = 7266458280. Its totient is φ = 1812706944.

The previous prime is 3687921953. The next prime is 3687921989. The reversal of 3687921968 is 8691297863.

3687921968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (59).

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, 1952405 + ... + 1954292.

It is an arithmetic number, because the mean of its divisors is an integer number (363322914).

Almost surely, 2^3687921968 is an apocalyptic number.

It is an amenable number.

3687921968 is a deficient number, since it is larger than the sum of its proper divisors (3578536312).

3687921968 is a wasteful number, since it uses less digits than its factorization.

3687921968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3906764 (or 3906758 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 59.

The square root of 3687921968 is about 60728.2633375927. The cubic root of 3687921968 is about 1544.9955792824.

The spelling of 3687921968 in words is "three billion, six hundred eighty-seven million, nine hundred twenty-one thousand, nine hundred sixty-eight".