3971311916 has 48 divisors (see below), whose sum is σ = 8428213248. Its totient is φ = 1612526400.

The previous prime is 3971311907. The next prime is 3971311931. The reversal of 3971311916 is 6191131793.

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 15 ways as a sum of consecutive naturals, for example, 94250 + ... + 129713.

It is an arithmetic number, because the mean of its divisors is an integer number (175587776).

Almost surely, 2^3971311916 is an apocalyptic number.

It is an amenable number.

3971311916 is an abundant number, since it is smaller than the sum of its proper divisors (4456901332).

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

3971311916 is a wasteful number, since it uses less digits than its factorization.

3971311916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224022 (or 224020 counting only the distinct ones).

The product of its digits is 30618, while the sum is 41.

The square root of 3971311916 is about 63018.3458684850. The cubic root of 3971311916 is about 1583.5969852462.

The spelling of 3971311916 in words is "three billion, nine hundred seventy-one million, three hundred eleven thousand, nine hundred sixteen".