189078130917 has 12 divisors (see below), whose sum is σ = 294121537164. Its totient is φ = 116355772800.

The previous prime is 189078130907. The next prime is 189078130939. The reversal of 189078130917 is 719031870981.

189078130917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 37789027236 + 151289103681 = 194394^2 + 388959^2 .

It is not a de Polignac number, because 189078130917 - 2⁷ = 189078130789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189078130907) 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 in 11 ways as a sum of consecutive naturals, for example, 808026084 + ... + 808026317.

It is an arithmetic number, because the mean of its divisors is an integer number (24510128097).

Almost surely, 2^189078130917 is an apocalyptic number.

It is an amenable number.

189078130917 is a deficient number, since it is larger than the sum of its proper divisors (105043406247).

189078130917 is a wasteful number, since it uses less digits than its factorization.

189078130917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616052420 (or 1616052417 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 54.

The spelling of 189078130917 in words is "one hundred eighty-nine billion, seventy-eight million, one hundred thirty thousand, nine hundred seventeen".