3878361285 has 8 divisors (see below), whose sum is σ = 6205378080. Its totient is φ = 2068459344.

The previous prime is 3878361281. The next prime is 3878361293. The reversal of 3878361285 is 5821638783.

3878361285 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3878361285 - 2² = 3878361281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3878361281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129278695 + ... + 129278724.

It is an arithmetic number, because the mean of its divisors is an integer number (775672260).

Almost surely, 2^3878361285 is an apocalyptic number.

It is an amenable number.

3878361285 is a deficient number, since it is larger than the sum of its proper divisors (2327016795).

3878361285 is a wasteful number, since it uses less digits than its factorization.

3878361285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258557427.

The product of its digits is 1935360, while the sum is 51.

The square root of 3878361285 is about 62276.4906284868. The cubic root of 3878361285 is about 1571.1443487357.

The spelling of 3878361285 in words is "three billion, eight hundred seventy-eight million, three hundred sixty-one thousand, two hundred eighty-five".