189609984043 has 2 divisors, whose sum is σ = 189609984044. Its totient is φ = 189609984042.

The previous prime is 189609984029. The next prime is 189609984071. The reversal of 189609984043 is 340489906981.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189609984043 is a prime.

It is not a weakly prime, because it can be changed into another prime (189609984643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94804992021 + 94804992022.

It is an arithmetic number, because the mean of its divisors is an integer number (94804992022).

Almost surely, 2^189609984043 is an apocalyptic number.

189609984043 is a deficient number, since it is larger than the sum of its proper divisors (1).

189609984043 is an equidigital number, since it uses as much as digits as its factorization.

189609984043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13436928, while the sum is 61.

The spelling of 189609984043 in words is "one hundred eighty-nine billion, six hundred nine million, nine hundred eighty-four thousand, forty-three".