189878830807 has 2 divisors, whose sum is σ = 189878830808. Its totient is φ = 189878830806.

The previous prime is 189878830777. The next prime is 189878830837. The reversal of 189878830807 is 708038878981.

189878830807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (189878830777) and next prime (189878830837).

It is a cyclic number.

It is not a de Polignac number, because 189878830807 - 2³¹ = 187731347159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189878830837) 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, 94939415403 + 94939415404.

It is an arithmetic number, because the mean of its divisors is an integer number (94939415404).

Almost surely, 2^189878830807 is an apocalyptic number.

189878830807 is a deficient number, since it is larger than the sum of its proper divisors (1).

189878830807 is an equidigital number, since it uses as much as digits as its factorization.

189878830807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43352064, while the sum is 67.

The spelling of 189878830807 in words is "one hundred eighty-nine billion, eight hundred seventy-eight million, eight hundred thirty thousand, eight hundred seven".