183881 has 2 divisors, whose sum is σ = 183882. Its totient is φ = 183880.

The previous prime is 183877. The next prime is 183907. The reversal of 183881 is 188381.

It is a happy number.

183881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116281 + 67600 = 341^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 183881 - 2² = 183877 is a prime.

It is a super-2 number, since 2×183881² = 67624444322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (183871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91940 + 91941.

It is an arithmetic number, because the mean of its divisors is an integer number (91941).

2¹⁸³⁸⁸¹ is an apocalyptic number.

It is an amenable number.

183881 is a deficient number, since it is larger than the sum of its proper divisors (1).

183881 is an equidigital number, since it uses as much as digits as its factorization.

183881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 29.

The square root of 183881 is about 428.8134792658. The cubic root of 183881 is about 56.8650753523.

The spelling of 183881 in words is "one hundred eighty-three thousand, eight hundred eighty-one".