189975593 has 2 divisors, whose sum is σ = 189975594. Its totient is φ = 189975592.

The previous prime is 189975589. The next prime is 189975613. The reversal of 189975593 is 395579981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186923584 + 3052009 = 13672^2 + 1747^2 .

It is a cyclic number.

It is not a de Polignac number, because 189975593 - 2² = 189975589 is a prime.

It is not a weakly prime, because it can be changed into another prime (189975503) 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, 94987796 + 94987797.

It is an arithmetic number, because the mean of its divisors is an integer number (94987797).

Almost surely, 2^189975593 is an apocalyptic number.

It is an amenable number.

189975593 is a deficient number, since it is larger than the sum of its proper divisors (1).

189975593 is an equidigital number, since it uses as much as digits as its factorization.

189975593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3061800, while the sum is 56.

The square root of 189975593 is about 13783.1633887145. The cubic root of 189975593 is about 574.8650904665.

The spelling of 189975593 in words is "one hundred eighty-nine million, nine hundred seventy-five thousand, five hundred ninety-three".