3878005161 has 16 divisors (see below), whose sum is σ = 5291637120. Its totient is φ = 2525523840.

The previous prime is 3878005151. The next prime is 3878005189. The reversal of 3878005161 is 1615008783.

It is not a de Polignac number, because 3878005161 - 2⁵ = 3878005129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3878005111) by changing a digit.

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, 60300 + ... + 106733.

It is an arithmetic number, because the mean of its divisors is an integer number (330727320).

Almost surely, 2^3878005161 is an apocalyptic number.

It is an amenable number.

3878005161 is a deficient number, since it is larger than the sum of its proper divisors (1413631959).

3878005161 is a wasteful number, since it uses less digits than its factorization.

3878005161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167216.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 3878005161 is about 62273.6313458594. The cubic root of 3878005161 is about 1571.0962580349.

The spelling of 3878005161 in words is "three billion, eight hundred seventy-eight million, five thousand, one hundred sixty-one".