3878818 has 4 divisors (see below), whose sum is σ = 5818230. Its totient is φ = 1939408.

The previous prime is 3878783. The next prime is 3878843. The reversal of 3878818 is 8188783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8188783 = 223 ⋅36721.

It can be written as a sum of positive squares in only one way, i.e., 3485689 + 393129 = 1867^2 + 627^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 969703 + ... + 969706.

Almost surely, 2^3878818 is an apocalyptic number.

3878818 is a deficient number, since it is larger than the sum of its proper divisors (1939412).

3878818 is a wasteful number, since it uses less digits than its factorization.

3878818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939411.

The product of its digits is 86016, while the sum is 43.

The square root of 3878818 is about 1969.4715027134. The cubic root of 3878818 is about 157.1206018856.

The spelling of 3878818 in words is "three million, eight hundred seventy-eight thousand, eight hundred eighteen".