3878116780 has 48 divisors (see below), whose sum is σ = 8313873120. Its totient is φ = 1519170048.

The previous prime is 3878116729. The next prime is 3878116793. The reversal of 3878116780 is 876118783.

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 15 ways as a sum of consecutive naturals, for example, 223456 + ... + 240184.

It is an arithmetic number, because the mean of its divisors is an integer number (173205690).

Almost surely, 2^3878116780 is an apocalyptic number.

It is an amenable number.

3878116780 is an abundant number, since it is smaller than the sum of its proper divisors (4435756340).

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

3878116780 is a wasteful number, since it uses less digits than its factorization.

3878116780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16978 (or 16976 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 49.

The square root of 3878116780 is about 62274.5275373487. The cubic root of 3878116780 is about 1571.1113312924. Note that the first 3 decimals are identical.

The spelling of 3878116780 in words is "three billion, eight hundred seventy-eight million, one hundred sixteen thousand, seven hundred eighty".