189056668987 has 2 divisors, whose sum is σ = 189056668988. Its totient is φ = 189056668986.

The previous prime is 189056668973. The next prime is 189056669059. The reversal of 189056668987 is 789866650981.

189056668987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189056668987 - 2⁷ = 189056668859 is a prime.

It is not a weakly prime, because it can be changed into another prime (189056668967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94528334493 + 94528334494.

It is an arithmetic number, because the mean of its divisors is an integer number (94528334494).

Almost surely, 2^189056668987 is an apocalyptic number.

189056668987 is a deficient number, since it is larger than the sum of its proper divisors (1).

189056668987 is an equidigital number, since it uses as much as digits as its factorization.

189056668987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 313528320, while the sum is 73.

The spelling of 189056668987 in words is "one hundred eighty-nine billion, fifty-six million, six hundred sixty-eight thousand, nine hundred eighty-seven".