381163 has 4 divisors (see below), whose sum is σ = 386920. Its totient is φ = 375408.

The previous prime is 381103. The next prime is 381167. The reversal of 381163 is 361183.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 381163 - 2⁹ = 380651 is a prime.

It is a Duffinian number.

381163 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (381167) by changing a digit.

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, 2778 + ... + 2911.

It is an arithmetic number, because the mean of its divisors is an integer number (96730).

2³⁸¹¹⁶³ is an apocalyptic number.

381163 is a deficient number, since it is larger than the sum of its proper divisors (5757).

381163 is an equidigital number, since it uses as much as digits as its factorization.

381163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5756.

The product of its digits is 432, while the sum is 22.

The square root of 381163 is about 617.3839972011. The cubic root of 381163 is about 72.5053820816.

The spelling of 381163 in words is "three hundred eighty-one thousand, one hundred sixty-three".