1130161 has 4 divisors (see below), whose sum is σ = 1133092. Its totient is φ = 1127232.

The previous prime is 1130131. The next prime is 1130191. The reversal of 1130161 is 1610311.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (1130131) and next prime (1130191).

It can be written as a sum of positive squares in 2 ways, for example, as 913936 + 216225 = 956^2 + 465^2 .

It is a cyclic number.

It is not a de Polignac number, because 1130161 - 2¹⁹ = 605873 is a prime.

It is a Duffinian number.

1130161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1130131) 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, 780 + ... + 1693.

It is an arithmetic number, because the mean of its divisors is an integer number (283273).

2^1130161 is an apocalyptic number.

It is an amenable number.

1130161 is a deficient number, since it is larger than the sum of its proper divisors (2931).

1130161 is an equidigital number, since it uses as much as digits as its factorization.

1130161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2930.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1130161 is about 1063.0903066062. The cubic root of 1130161 is about 104.1629902347.

Adding to 1130161 its reverse (1610311), we get a palindrome (2740472).

The spelling of 1130161 in words is "one million, one hundred thirty thousand, one hundred sixty-one".