1183161 has 16 divisors (see below), whose sum is σ = 1823744. Its totient is φ = 668304.

The previous prime is 1183159. The next prime is 1183163. The reversal of 1183161 is 1613811.

It is an interprime number because it is at equal distance from previous prime (1183159) and next prime (1183163).

It is not a de Polignac number, because 1183161 - 2¹ = 1183159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

1183161 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1183163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1890 + ... + 2436.

It is an arithmetic number, because the mean of its divisors is an integer number (113984).

2^1183161 is an apocalyptic number.

It is an amenable number.

1183161 is a deficient number, since it is larger than the sum of its proper divisors (640583).

1183161 is a wasteful number, since it uses less digits than its factorization.

1183161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660.

The product of its digits is 144, while the sum is 21.

The square root of 1183161 is about 1087.7320442094. The cubic root of 1183161 is about 105.7664550846.

Adding to 1183161 its reverse (1613811), we get a palindrome (2796972).

The spelling of 1183161 in words is "one million, one hundred eighty-three thousand, one hundred sixty-one".