189864450275 has 12 divisors (see below), whose sum is σ = 249280855272. Its totient is φ = 142956762240.

The previous prime is 189864450271. The next prime is 189864450301. The reversal of 189864450275 is 572054468981.

189864450275 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 189864450275 - 2² = 189864450271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189864450271) 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, 223369517 + ... + 223370366.

It is an arithmetic number, because the mean of its divisors is an integer number (20773404606).

Almost surely, 2^189864450275 is an apocalyptic number.

189864450275 is a deficient number, since it is larger than the sum of its proper divisors (59416404997).

189864450275 is a wasteful number, since it uses less digits than its factorization.

189864450275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446739910 (or 446739905 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 59.

The spelling of 189864450275 in words is "one hundred eighty-nine billion, eight hundred sixty-four million, four hundred fifty thousand, two hundred seventy-five".