978422183 has 2 divisors, whose sum is σ = 978422184. Its totient is φ = 978422182.

The previous prime is 978422161. The next prime is 978422197. The reversal of 978422183 is 381224879.

978422183 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 is a cyclic number.

It is not a de Polignac number, because 978422183 - 2²² = 974227879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (978422113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489211091 + 489211092.

It is an arithmetic number, because the mean of its divisors is an integer number (489211092).

Almost surely, 2^978422183 is an apocalyptic number.

978422183 is a deficient number, since it is larger than the sum of its proper divisors (1).

978422183 is an equidigital number, since it uses as much as digits as its factorization.

978422183 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 44.

The square root of 978422183 is about 31279.7407757801. The cubic root of 978422183 is about 992.7550315269.

The spelling of 978422183 in words is "nine hundred seventy-eight million, four hundred twenty-two thousand, one hundred eighty-three".