981163 has 4 divisors (see below), whose sum is σ = 985608. Its totient is φ = 976720.

The previous prime is 981151. The next prime is 981173. The reversal of 981163 is 361189.

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: 361189 = 251 ⋅1439.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-981163 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (981133) by changing a digit.

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, 1873 + ... + 2338.

It is an arithmetic number, because the mean of its divisors is an integer number (246402).

2⁹⁸¹¹⁶³ is an apocalyptic number.

981163 is a deficient number, since it is larger than the sum of its proper divisors (4445).

981163 is a wasteful number, since it uses less digits than its factorization.

981163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4444.

The product of its digits is 1296, while the sum is 28.

The square root of 981163 is about 990.5367231961. The cubic root of 981163 is about 99.3681156314.

The spelling of 981163 in words is "nine hundred eighty-one thousand, one hundred sixty-three".