189263170393 has 6 divisors (see below), whose sum is σ = 208033071722. Its totient is φ = 172057427520.

The previous prime is 189263170333. The next prime is 189263170463. The reversal of 189263170393 is 393071362981.

189263170393 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 only one way, i.e., 189144098649 + 119071744 = 434907^2 + 10912^2 .

It is not a de Polignac number, because 189263170393 - 2³³ = 180673235801 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189263170393.

It is not an unprimeable number, because it can be changed into a prime (189263170333) 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 5 ways as a sum of consecutive naturals, for example, 782079096 + ... + 782079337.

Almost surely, 2^189263170393 is an apocalyptic number.

It is an amenable number.

189263170393 is a deficient number, since it is larger than the sum of its proper divisors (18769901329).

189263170393 is a wasteful number, since it uses less digits than its factorization.

189263170393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564158455 (or 1564158444 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 52.

The spelling of 189263170393 in words is "one hundred eighty-nine billion, two hundred sixty-three million, one hundred seventy thousand, three hundred ninety-three".