189695431844 has 6 divisors (see below), whose sum is σ = 331967005734. Its totient is φ = 94847715920.

The previous prime is 189695431841. The next prime is 189695431927. The reversal of 189695431844 is 448134596981.

189695431844 is digitally balanced in base 3, 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., 150030726244 + 39664705600 = 387338^2 + 199160^2 .

It is not an unprimeable number, because it can be changed into a prime (189695431841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23711928977 + ... + 23711928984.

It is an arithmetic number, because the mean of its divisors is an integer number (55327834289).

Almost surely, 2^189695431844 is an apocalyptic number.

It is an amenable number.

189695431844 is a deficient number, since it is larger than the sum of its proper divisors (142271573890).

189695431844 is a wasteful number, since it uses less digits than its factorization.

189695431844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47423857965 (or 47423857963 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 62.

The spelling of 189695431844 in words is "one hundred eighty-nine billion, six hundred ninety-five million, four hundred thirty-one thousand, eight hundred forty-four".