183161 has 4 divisors (see below), whose sum is σ = 199824. Its totient is φ = 166500.

The previous prime is 183151. The next prime is 183167. The reversal of 183161 is 161381.

183161 = 124² + 125² + ... + 134².

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-183161 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 183161.

It is not an unprimeable number, because it can be changed into a prime (183167) 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, 8315 + ... + 8336.

It is an arithmetic number, because the mean of its divisors is an integer number (49956).

2¹⁸³¹⁶¹ is an apocalyptic number.

183161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

183161 is a deficient number, since it is larger than the sum of its proper divisors (16663).

183161 is a wasteful number, since it uses less digits than its factorization.

183161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16662.

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

The square root of 183161 is about 427.9731299977. The cubic root of 183161 is about 56.7907584316.

The spelling of 183161 in words is "one hundred eighty-three thousand, one hundred sixty-one".