3878135 has 4 divisors (see below), whose sum is σ = 4653768. Its totient is φ = 3102504.

The previous prime is 3878113. The next prime is 3878137. The reversal of 3878135 is 5318783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5318783 = 167 ⋅31849.

It is a cyclic number.

It is not a de Polignac number, because 3878135 - 2⁸ = 3877879 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3878095 and 3878104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3878137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387809 + ... + 387818.

It is an arithmetic number, because the mean of its divisors is an integer number (1163442).

Almost surely, 2^3878135 is an apocalyptic number.

3878135 is a deficient number, since it is larger than the sum of its proper divisors (775633).

3878135 is an equidigital number, since it uses as much as digits as its factorization.

3878135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775632.

The product of its digits is 20160, while the sum is 35.

The square root of 3878135 is about 1969.2980983081. The cubic root of 3878135 is about 157.1113791731. Note that the first 3 decimals are identical.

The spelling of 3878135 in words is "three million, eight hundred seventy-eight thousand, one hundred thirty-five".