189789007 has 2 divisors, whose sum is σ = 189789008. Its totient is φ = 189789006.

The previous prime is 189788993. The next prime is 189789011. The reversal of 189789007 is 700987981.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189789007 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189789907) 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, 94894503 + 94894504.

It is an arithmetic number, because the mean of its divisors is an integer number (94894504).

Almost surely, 2^189789007 is an apocalyptic number.

189789007 is a deficient number, since it is larger than the sum of its proper divisors (1).

189789007 is an equidigital number, since it uses as much as digits as its factorization.

189789007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 49.

The square root of 189789007 is about 13776.3931055992. The cubic root of 189789007 is about 574.6768260843.

The spelling of 189789007 in words is "one hundred eighty-nine million, seven hundred eighty-nine thousand, seven".