981545183 has 2 divisors, whose sum is σ = 981545184. Its totient is φ = 981545182.

The previous prime is 981545161. The next prime is 981545221. The reversal of 981545183 is 381545189.

981545183 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 is a cyclic number.

It is not a de Polignac number, because 981545183 - 2²² = 977350879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981545113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490772591 + 490772592.

It is an arithmetic number, because the mean of its divisors is an integer number (490772592).

Almost surely, 2^981545183 is an apocalyptic number.

981545183 is a deficient number, since it is larger than the sum of its proper divisors (1).

981545183 is an equidigital number, since it uses as much as digits as its factorization.

981545183 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 44.

The square root of 981545183 is about 31329.6214946814. The cubic root of 981545183 is about 993.8101592577.

The spelling of 981545183 in words is "nine hundred eighty-one million, five hundred forty-five thousand, one hundred eighty-three".