183781133 has 2 divisors, whose sum is σ = 183781134. Its totient is φ = 183781132.

The previous prime is 183781123. The next prime is 183781141. The reversal of 183781133 is 331187381.

183781133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128754409 + 55026724 = 11347^2 + 7418^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-183781133 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 183781093 and 183781102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (183781123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91890566 + 91890567.

It is an arithmetic number, because the mean of its divisors is an integer number (91890567).

Almost surely, 2^183781133 is an apocalyptic number.

It is an amenable number.

183781133 is a deficient number, since it is larger than the sum of its proper divisors (1).

183781133 is an equidigital number, since it uses as much as digits as its factorization.

183781133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 183781133 is about 13556.5900210931. The cubic root of 183781133 is about 568.5477888727.

The spelling of 183781133 in words is "one hundred eighty-three million, seven hundred eighty-one thousand, one hundred thirty-three".