189374512273 has 4 divisors (see below), whose sum is σ = 191968683748. Its totient is φ = 186780340800.

The previous prime is 189374512199. The next prime is 189374512279. The reversal of 189374512273 is 372215473981.

189374512273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47172364864 + 142202147409 = 217192^2 + 377097^2 .

It is a cyclic number.

It is not a de Polignac number, because 189374512273 - 2²¹ = 189372415121 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 189374512273.

It is not an unprimeable number, because it can be changed into a prime (189374512279) 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 3 ways as a sum of consecutive naturals, for example, 1297085628 + ... + 1297085773.

It is an arithmetic number, because the mean of its divisors is an integer number (47992170937).

Almost surely, 2^189374512273 is an apocalyptic number.

It is an amenable number.

189374512273 is a deficient number, since it is larger than the sum of its proper divisors (2594171475).

189374512273 is an equidigital number, since it uses as much as digits as its factorization.

189374512273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2594171474.

The product of its digits is 2540160, while the sum is 52.

The spelling of 189374512273 in words is "one hundred eighty-nine billion, three hundred seventy-four million, five hundred twelve thousand, two hundred seventy-three".