189352561 has 2 divisors, whose sum is σ = 189352562. Its totient is φ = 189352560.

The previous prime is 189352547. The next prime is 189352567. The reversal of 189352561 is 165253981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96904336 + 92448225 = 9844^2 + 9615^2 .

It is a cyclic number.

It is not a de Polignac number, because 189352561 - 2⁵ = 189352529 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (189352567) 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, 94676280 + 94676281.

It is an arithmetic number, because the mean of its divisors is an integer number (94676281).

Almost surely, 2^189352561 is an apocalyptic number.

It is an amenable number.

189352561 is a deficient number, since it is larger than the sum of its proper divisors (1).

189352561 is an equidigital number, since it uses as much as digits as its factorization.

189352561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 40.

The square root of 189352561 is about 13760.5436302495. The cubic root of 189352561 is about 574.2359717666.

The spelling of 189352561 in words is "one hundred eighty-nine million, three hundred fifty-two thousand, five hundred sixty-one".