1163081 has 2 divisors, whose sum is σ = 1163082. Its totient is φ = 1163080.

The previous prime is 1163077. The next prime is 1163083. The reversal of 1163081 is 1803611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 990025 + 173056 = 995^2 + 416^2 .

It is a cyclic number.

It is not a de Polignac number, because 1163081 - 2² = 1163077 is a prime.

It is a super-2 number, since 2×1163081² = 2705514825122, which contains 22 as substring.

Together with 1163083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1163083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581540 + 581541.

It is an arithmetic number, because the mean of its divisors is an integer number (581541).

2^1163081 is an apocalyptic number.

It is an amenable number.

1163081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163081 is an equidigital number, since it uses as much as digits as its factorization.

1163081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1163081 is about 1078.4623312847. The cubic root of 1163081 is about 105.1646999492.

Adding to 1163081 its reverse (1803611), we get a palindrome (2966692).

It can be divided in two parts, 11630 and 81, that added together give a palindrome (11711).

The spelling of 1163081 in words is "one million, one hundred sixty-three thousand, eighty-one".