978031933 has 2 divisors, whose sum is σ = 978031934. Its totient is φ = 978031932.

The previous prime is 978031823. The next prime is 978031937. The reversal of 978031933 is 339130879.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 579750084 + 398281849 = 24078^2 + 19957^2 .

It is a cyclic number.

It is not a de Polignac number, because 978031933 - 2⁹ = 978031421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 978031933.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (978031937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489015966 + 489015967.

It is an arithmetic number, because the mean of its divisors is an integer number (489015967).

Almost surely, 2^978031933 is an apocalyptic number.

It is an amenable number.

978031933 is a deficient number, since it is larger than the sum of its proper divisors (1).

978031933 is an equidigital number, since it uses as much as digits as its factorization.

978031933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 978031933 is about 31273.5020904279. The cubic root of 978031933 is about 992.6230250584.

The spelling of 978031933 in words is "nine hundred seventy-eight million, thirty-one thousand, nine hundred thirty-three".