189686041 has 2 divisors, whose sum is σ = 189686042. Its totient is φ = 189686040.

The previous prime is 189686033. The next prime is 189686093. The reversal of 189686041 is 140686981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173686041 + 16000000 = 13179^2 + 4000^2 .

It is a cyclic number.

It is not a de Polignac number, because 189686041 - 2³ = 189686033 is a prime.

It is not a weakly prime, because it can be changed into another prime (189686741) 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, 94843020 + 94843021.

It is an arithmetic number, because the mean of its divisors is an integer number (94843021).

Almost surely, 2^189686041 is an apocalyptic number.

It is an amenable number.

189686041 is a deficient number, since it is larger than the sum of its proper divisors (1).

189686041 is an equidigital number, since it uses as much as digits as its factorization.

189686041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 189686041 is about 13772.6555536687. The cubic root of 189686041 is about 574.5728810436.

The spelling of 189686041 in words is "one hundred eighty-nine million, six hundred eighty-six thousand, forty-one".