189488117 has 32 divisors (see below), whose sum is σ = 245548800. Its totient is φ = 142184448.

The previous prime is 189488113. The next prime is 189488129. The reversal of 189488117 is 711884981.

It is not a de Polignac number, because 189488117 - 2² = 189488113 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189488113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155093 + ... + 156309.

It is an arithmetic number, because the mean of its divisors is an integer number (7673400).

Almost surely, 2^189488117 is an apocalyptic number.

It is an amenable number.

189488117 is a deficient number, since it is larger than the sum of its proper divisors (56060683).

189488117 is a wasteful number, since it uses less digits than its factorization.

189488117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325.

The product of its digits is 129024, while the sum is 47.

The square root of 189488117 is about 13765.4682811737. The cubic root of 189488117 is about 574.3729694093.

The spelling of 189488117 in words is "one hundred eighty-nine million, four hundred eighty-eight thousand, one hundred seventeen".