3881635 has 4 divisors (see below), whose sum is σ = 4657968. Its totient is φ = 3105304.

The previous prime is 3881611. The next prime is 3881659. The reversal of 3881635 is 5361883.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5361883 = 83 ⋅64601.

It is an interprime number because it is at equal distance from previous prime (3881611) and next prime (3881659).

It is a cyclic number.

It is not a de Polignac number, because 3881635 - 2¹⁷ = 3750563 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3881635.

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 in 3 ways as a sum of consecutive naturals, for example, 388159 + ... + 388168.

It is an arithmetic number, because the mean of its divisors is an integer number (1164492).

Almost surely, 2^3881635 is an apocalyptic number.

3881635 is a deficient number, since it is larger than the sum of its proper divisors (776333).

3881635 is an equidigital number, since it uses as much as digits as its factorization.

3881635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776332.

The product of its digits is 17280, while the sum is 34.

The square root of 3881635 is about 1970.1865393916. The cubic root of 3881635 is about 157.1586290742.

The spelling of 3881635 in words is "three million, eight hundred eighty-one thousand, six hundred thirty-five".