189468642007 has 2 divisors, whose sum is σ = 189468642008. Its totient is φ = 189468642006.

The previous prime is 189468641981. The next prime is 189468642023. The reversal of 189468642007 is 700246864981.

It is a happy number.

189468642007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189468642007 - 2¹¹ = 189468639959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189468645007) 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, 94734321003 + 94734321004.

It is an arithmetic number, because the mean of its divisors is an integer number (94734321004).

Almost surely, 2^189468642007 is an apocalyptic number.

189468642007 is a deficient number, since it is larger than the sum of its proper divisors (1).

189468642007 is an equidigital number, since it uses as much as digits as its factorization.

189468642007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 189468642007 in words is "one hundred eighty-nine billion, four hundred sixty-eight million, six hundred forty-two thousand, seven".