189995833 has 2 divisors, whose sum is σ = 189995834. Its totient is φ = 189995832.

The previous prime is 189995803. The next prime is 189995837. The reversal of 189995833 is 338599981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189695529 + 300304 = 13773^2 + 548^2 .

It is an emirp because it is prime and its reverse (338599981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189995833 - 2⁹ = 189995321 is a prime.

It is not a weakly prime, because it can be changed into another prime (189995837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94997916 + 94997917.

It is an arithmetic number, because the mean of its divisors is an integer number (94997917).

Almost surely, 2^189995833 is an apocalyptic number.

It is an amenable number.

189995833 is a deficient number, since it is larger than the sum of its proper divisors (1).

189995833 is an equidigital number, since it uses as much as digits as its factorization.

189995833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2099520, while the sum is 55.

The square root of 189995833 is about 13783.8975982847. The cubic root of 189995833 is about 574.8855051174.

The spelling of 189995833 in words is "one hundred eighty-nine million, nine hundred ninety-five thousand, eight hundred thirty-three".