1182161 has 4 divisors (see below), whose sum is σ = 1244400. Its totient is φ = 1119924.

The previous prime is 1182157. The next prime is 1182211. The reversal of 1182161 is 1612811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1612811 = 107 ⋅15073.

It is a cyclic number.

It is not a de Polignac number, because 1182161 - 2² = 1182157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1182121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31091 + ... + 31128.

It is an arithmetic number, because the mean of its divisors is an integer number (311100).

2^1182161 is an apocalyptic number.

It is an amenable number.

1182161 is a deficient number, since it is larger than the sum of its proper divisors (62239).

1182161 is an equidigital number, since it uses as much as digits as its factorization.

1182161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62238.

The product of its digits is 96, while the sum is 20.

The square root of 1182161 is about 1087.2722750075. The cubic root of 1182161 is about 105.7366489785.

Adding to 1182161 its reverse (1612811), we get a palindrome (2794972).

The spelling of 1182161 in words is "one million, one hundred eighty-two thousand, one hundred sixty-one".