189434533 has 2 divisors, whose sum is σ = 189434534. Its totient is φ = 189434532.

The previous prime is 189434513. The next prime is 189434551. The reversal of 189434533 is 335434981.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188430529 + 1004004 = 13727^2 + 1002^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189434533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189434513) 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, 94717266 + 94717267.

It is an arithmetic number, because the mean of its divisors is an integer number (94717267).

Almost surely, 2^189434533 is an apocalyptic number.

It is an amenable number.

189434533 is a deficient number, since it is larger than the sum of its proper divisors (1).

189434533 is an equidigital number, since it uses as much as digits as its factorization.

189434533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 40.

The square root of 189434533 is about 13763.5218240100. The cubic root of 189434533 is about 574.3188233530.

The spelling of 189434533 in words is "one hundred eighty-nine million, four hundred thirty-four thousand, five hundred thirty-three".