183540881 has 2 divisors, whose sum is σ = 183540882. Its totient is φ = 183540880.

The previous prime is 183540859. The next prime is 183540883. The reversal of 183540881 is 188045381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177315856 + 6225025 = 13316^2 + 2495^2 .

It is a cyclic number.

It is not a de Polignac number, because 183540881 - 2¹⁰ = 183539857 is a prime.

It is a super-2 number, since 2×183540881² = 67374509996512322, which contains 22 as substring.

Together with 183540883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (183540883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91770440 + 91770441.

It is an arithmetic number, because the mean of its divisors is an integer number (91770441).

Almost surely, 2^183540881 is an apocalyptic number.

It is an amenable number.

183540881 is a deficient number, since it is larger than the sum of its proper divisors (1).

183540881 is an equidigital number, since it uses as much as digits as its factorization.

183540881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 183540881 is about 13547.7260453554. The cubic root of 183540881 is about 568.2999318945.

The spelling of 183540881 in words is "one hundred eighty-three million, five hundred forty thousand, eight hundred eighty-one".