189728162003 has 8 divisors (see below), whose sum is σ = 199831575120. Its totient is φ = 179636520960.

The previous prime is 189728161969. The next prime is 189728162009. The reversal of 189728162003 is 300261827981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189728162003 - 2⁶ = 189728161939 is a prime.

It is a super-2 number, since 2×189728162003² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189728162009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2909918 + ... + 2974403.

It is an arithmetic number, because the mean of its divisors is an integer number (24978946890).

Almost surely, 2^189728162003 is an apocalyptic number.

189728162003 is a deficient number, since it is larger than the sum of its proper divisors (10103413117).

189728162003 is a wasteful number, since it uses less digits than its factorization.

189728162003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5886037.

The product of its (nonzero) digits is 290304, while the sum is 47.

Adding to 189728162003 its reverse (300261827981), we get a palindrome (489989989984).

The spelling of 189728162003 in words is "one hundred eighty-nine billion, seven hundred twenty-eight million, one hundred sixty-two thousand, three".