189364310805 has 16 divisors (see below), whose sum is σ = 312756539904. Its totient is φ = 97736418240.

The previous prime is 189364310803. The next prime is 189364310831. The reversal of 189364310805 is 508013463981.

189364310805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189364310805 - 2¹ = 189364310803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189364310803) 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 15 ways as a sum of consecutive naturals, for example, 203617074 + ... + 203618003.

It is an arithmetic number, because the mean of its divisors is an integer number (19547283744).

Almost surely, 2^189364310805 is an apocalyptic number.

189364310805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189364310805 is a deficient number, since it is larger than the sum of its proper divisors (123392229099).

189364310805 is a wasteful number, since it uses less digits than its factorization.

189364310805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407235116.

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 189364310805 in words is "one hundred eighty-nine billion, three hundred sixty-four million, three hundred ten thousand, eight hundred five".