3937388216 has 16 divisors (see below), whose sum is σ = 7703586000. Its totient is φ = 1883098624.

The previous prime is 3937388209. The next prime is 3937388227. The reversal of 3937388216 is 6128837393.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10699241 + ... + 10699608.

It is an arithmetic number, because the mean of its divisors is an integer number (481474125).

Almost surely, 2^3937388216 is an apocalyptic number.

It is an amenable number.

3937388216 is a deficient number, since it is larger than the sum of its proper divisors (3766197784).

3937388216 is a wasteful number, since it uses less digits than its factorization.

3937388216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21398878 (or 21398874 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 50.

The square root of 3937388216 is about 62748.6112675014. The cubic root of 3937388216 is about 1579.0749560358.

The spelling of 3937388216 in words is "three billion, nine hundred thirty-seven million, three hundred eighty-eight thousand, two hundred sixteen".