3971502878 has 8 divisors (see below), whose sum is σ = 6808290672. Its totient is φ = 1702072656.

The previous prime is 3971502869. The next prime is 3971502917. The reversal of 3971502878 is 8782051793.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 141839375 + ... + 141839402.

It is an arithmetic number, because the mean of its divisors is an integer number (851036334).

Almost surely, 2^3971502878 is an apocalyptic number.

3971502878 is a deficient number, since it is larger than the sum of its proper divisors (2836787794).

3971502878 is a wasteful number, since it uses less digits than its factorization.

3971502878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283678786.

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 3971502878 is about 63019.8609804877. The cubic root of 3971502878 is about 1583.6223674546.

The spelling of 3971502878 in words is "three billion, nine hundred seventy-one million, five hundred two thousand, eight hundred seventy-eight".