189444512695 has 4 divisors (see below), whose sum is σ = 227333415240. Its totient is φ = 151555610152.

The previous prime is 189444512693. The next prime is 189444512729. The reversal of 189444512695 is 596215444981.

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

It is a cyclic number.

It is not a de Polignac number, because 189444512695 - 2¹ = 189444512693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189444512693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18944451265 + ... + 18944451274.

It is an arithmetic number, because the mean of its divisors is an integer number (56833353810).

Almost surely, 2^189444512695 is an apocalyptic number.

189444512695 is a deficient number, since it is larger than the sum of its proper divisors (37888902545).

189444512695 is an equidigital number, since it uses as much as digits as its factorization.

189444512695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37888902544.

The product of its digits is 12441600, while the sum is 58.

The spelling of 189444512695 in words is "one hundred eighty-nine billion, four hundred forty-four million, five hundred twelve thousand, six hundred ninety-five".