189249360784 has 45 divisors (see below), whose sum is σ = 403075434811. Its totient is φ = 86013736160.

The previous prime is 189249360761. The next prime is 189249360803. The reversal of 189249360784 is 487063942981.

The square root of 189249360784 is 435028.

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

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 19136289 + ... + 19146175.

Almost surely, 2^189249360784 is an apocalyptic number.

189249360784 is the 435028-th square number.

It is an amenable number.

189249360784 is an abundant number, since it is smaller than the sum of its proper divisors (213826074027).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189249360784 is an frugal number, since it uses more digits than its factorization.

189249360784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19804 (or 9900 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 189249360784 in words is "one hundred eighty-nine billion, two hundred forty-nine million, three hundred sixty thousand, seven hundred eighty-four".