381835 has 4 divisors (see below), whose sum is σ = 458208. Its totient is φ = 305464.

The previous prime is 381817. The next prime is 381841. The reversal of 381835 is 538183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 538183 = 89 ⋅6047.

It is a cyclic number.

It is not a de Polignac number, because 381835 - 2⁷ = 381707 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38179 + ... + 38188.

It is an arithmetic number, because the mean of its divisors is an integer number (114552).

2³⁸¹⁸³⁵ is an apocalyptic number.

381835 is a deficient number, since it is larger than the sum of its proper divisors (76373).

381835 is an equidigital number, since it uses as much as digits as its factorization.

381835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76372.

The product of its digits is 2880, while the sum is 28.

The square root of 381835 is about 617.9279893321. The cubic root of 381835 is about 72.5479666724.

The spelling of 381835 in words is "three hundred eighty-one thousand, eight hundred thirty-five".