189573389 has 2 divisors, whose sum is σ = 189573390. Its totient is φ = 189573388.

The previous prime is 189573361. The next prime is 189573407. The reversal of 189573389 is 983375981.

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., 144240100 + 45333289 = 12010^2 + 6733^2 .

It is a cyclic number.

It is not a de Polignac number, because 189573389 - 2⁸ = 189573133 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 189573389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189573359) 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, 94786694 + 94786695.

It is an arithmetic number, because the mean of its divisors is an integer number (94786695).

Almost surely, 2^189573389 is an apocalyptic number.

It is an amenable number.

189573389 is a deficient number, since it is larger than the sum of its proper divisors (1).

189573389 is an equidigital number, since it uses as much as digits as its factorization.

189573389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 53.

The square root of 189573389 is about 13768.5652484200. The cubic root of 189573389 is about 574.4591148056.

The spelling of 189573389 in words is "one hundred eighty-nine million, five hundred seventy-three thousand, three hundred eighty-nine".