3878940867 has 8 divisors (see below), whose sum is σ = 5184568080. Its totient is φ = 2579637120.

The previous prime is 3878940859. The next prime is 3878940883. The reversal of 3878940867 is 7680498783.

3878940867 is digitally balanced in base 3, because in such base 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 3878940867 - 2³ = 3878940859 is a prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 3878940867.

It is not an unprimeable number, because it can be changed into a prime (3878940887) 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, 1579434 + ... + 1581887.

It is an arithmetic number, because the mean of its divisors is an integer number (648071010).

Almost surely, 2^3878940867 is an apocalyptic number.

3878940867 is a deficient number, since it is larger than the sum of its proper divisors (1305627213).

3878940867 is a wasteful number, since it uses less digits than its factorization.

3878940867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161733.

The product of its (nonzero) digits is 16257024, while the sum is 60.

The square root of 3878940867 is about 62281.1437515401. The cubic root of 3878940867 is about 1571.2226087327. Note that the first 3 decimals are identical.

The spelling of 3878940867 in words is "three billion, eight hundred seventy-eight million, nine hundred forty thousand, eight hundred sixty-seven".