974438189 has 2 divisors, whose sum is σ = 974438190. Its totient is φ = 974438188.

The previous prime is 974438141. The next prime is 974438273. The reversal of 974438189 is 981834479.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 944517289 + 29920900 = 30733^2 + 5470^2 .

It is a cyclic number.

It is not a de Polignac number, because 974438189 - 2¹² = 974434093 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 974438189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (974438089) 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, 487219094 + 487219095.

It is an arithmetic number, because the mean of its divisors is an integer number (487219095).

Almost surely, 2^974438189 is an apocalyptic number.

It is an amenable number.

974438189 is a deficient number, since it is larger than the sum of its proper divisors (1).

974438189 is an equidigital number, since it uses as much as digits as its factorization.

974438189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 53.

The square root of 974438189 is about 31215.9925198607. The cubic root of 974438189 is about 991.4057467381.

The spelling of 974438189 in words is "nine hundred seventy-four million, four hundred thirty-eight thousand, one hundred eighty-nine".