189693349444 has 27 divisors (see below), whose sum is σ = 337776737151. Its totient is φ = 93213842760.

The previous prime is 189693349441. The next prime is 189693349463. The reversal of 189693349444 is 444943396981.

The square root of 189693349444 is 435538.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189693349441) 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 in 8 ways as a sum of consecutive naturals, for example, 51391639 + ... + 51395329.

Almost surely, 2^189693349444 is an apocalyptic number.

189693349444 is the 435538-th square number.

It is an amenable number.

189693349444 is a deficient number, since it is larger than the sum of its proper divisors (148083387707).

189693349444 is an frugal number, since it uses more digits than its factorization.

189693349444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7504 (or 3752 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 64.

Multiplying 189693349444 by its sum of digits (64), we get a square (12140374364416 = 3484304²).

The spelling of 189693349444 in words is "one hundred eighty-nine billion, six hundred ninety-three million, three hundred forty-nine thousand, four hundred forty-four".