189364310728 has 64 divisors (see below), whose sum is σ = 370036667520. Its totient is φ = 90765158400.

The previous prime is 189364310701. The next prime is 189364310747. The reversal of 189364310728 is 827013463981.

It is a super-3 number, since 3×189364310728³ (a number of 35 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62268888 + ... + 62271928.

It is an arithmetic number, because the mean of its divisors is an integer number (5781822930).

Almost surely, 2^189364310728 is an apocalyptic number.

It is an amenable number.

189364310728 is a deficient number, since it is larger than the sum of its proper divisors (180672356792).

189364310728 is a wasteful number, since it uses less digits than its factorization.

189364310728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6118 (or 6114 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 189364310728 in words is "one hundred eighty-nine billion, three hundred sixty-four million, three hundred ten thousand, seven hundred twenty-eight".