189328001 has 4 divisors (see below), whose sum is σ = 194445012. Its totient is φ = 184210992.

The previous prime is 189327967. The next prime is 189328021. The reversal of 189328001 is 100823981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100823981 = 29 ⋅3476689.

It can be written as a sum of positive squares in 2 ways, for example, as 73119601 + 116208400 = 8551^2 + 10780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189328001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189328021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2558450 + ... + 2558523.

It is an arithmetic number, because the mean of its divisors is an integer number (48611253).

Almost surely, 2^189328001 is an apocalyptic number.

It is an amenable number.

189328001 is a deficient number, since it is larger than the sum of its proper divisors (5117011).

189328001 is an equidigital number, since it uses as much as digits as its factorization.

189328001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5117010.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 189328001 is about 13759.6511947069. The cubic root of 189328001 is about 574.2111435745.

The spelling of 189328001 in words is "one hundred eighty-nine million, three hundred twenty-eight thousand, one".