189450529 has 2 divisors, whose sum is σ = 189450530. Its totient is φ = 189450528.

The previous prime is 189450493. The next prime is 189450551. The reversal of 189450529 is 925054981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155052304 + 34398225 = 12452^2 + 5865^2 .

It is a cyclic number.

It is not a de Polignac number, because 189450529 - 2⁹ = 189450017 is a prime.

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

It is not a weakly prime, because it can be changed into another prime (189450559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94725264 + 94725265.

It is an arithmetic number, because the mean of its divisors is an integer number (94725265).

Almost surely, 2^189450529 is an apocalyptic number.

It is an amenable number.

189450529 is a deficient number, since it is larger than the sum of its proper divisors (1).

189450529 is an equidigital number, since it uses as much as digits as its factorization.

189450529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 189450529 is about 13764.1029130125. The cubic root of 189450529 is about 574.3349882081.

The spelling of 189450529 in words is "one hundred eighty-nine million, four hundred fifty thousand, five hundred twenty-nine".