189834929 has 2 divisors, whose sum is σ = 189834930. Its totient is φ = 189834928.

The previous prime is 189834877. The next prime is 189834949. The reversal of 189834929 is 929438981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185640625 + 4194304 = 13625^2 + 2048^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189834929 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (189834949) 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, 94917464 + 94917465.

It is an arithmetic number, because the mean of its divisors is an integer number (94917465).

Almost surely, 2^189834929 is an apocalyptic number.

It is an amenable number.

189834929 is a deficient number, since it is larger than the sum of its proper divisors (1).

189834929 is an equidigital number, since it uses as much as digits as its factorization.

189834929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 53.

The square root of 189834929 is about 13778.0596964885. The cubic root of 189834929 is about 574.7231726060.

The spelling of 189834929 in words is "one hundred eighty-nine million, eight hundred thirty-four thousand, nine hundred twenty-nine".