189384722 has 18 divisors (see below), whose sum is σ = 293076693. Its totient is φ = 91782792.

The previous prime is 189384721. The next prime is 189384731. The reversal of 189384722 is 227483981.

It can be written as a sum of positive squares in 2 ways, for example, as 152794321 + 36590401 = 12361^2 + 6049^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=9731.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189384721) by changing a digit.

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, 719963 + ... + 720225.

Almost surely, 2^189384722 is an apocalyptic number.

189384722 is a deficient number, since it is larger than the sum of its proper divisors (103691971).

189384722 is an frugal number, since it uses more digits than its factorization.

189384722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 302 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 189384722 is about 13761.7121754526. The cubic root of 189384722 is about 574.2684807145.

The spelling of 189384722 in words is "one hundred eighty-nine million, three hundred eighty-four thousand, seven hundred twenty-two".