189081117 has 12 divisors (see below), whose sum is σ = 275770144. Its totient is φ = 124829640.

The previous prime is 189081097. The next prime is 189081119. The reversal of 189081117 is 711180981.

It is a happy number.

It is not a de Polignac number, because 189081117 - 2¹⁰ = 189080093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189081119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101059 + ... + 102912.

Almost surely, 2^189081117 is an apocalyptic number.

It is an amenable number.

189081117 is a deficient number, since it is larger than the sum of its proper divisors (86689027).

189081117 is a wasteful number, since it uses less digits than its factorization.

189081117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204080 (or 204077 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 36.

The square root of 189081117 is about 13750.6769651534. The cubic root of 189081117 is about 573.9614442734.

The spelling of 189081117 in words is "one hundred eighty-nine million, eighty-one thousand, one hundred seventeen".