115189 has 4 divisors (see below), whose sum is σ = 116224. Its totient is φ = 114156.

The previous prime is 115183. The next prime is 115201. The reversal of 115189 is 981511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 981511 = 107 ⋅9173.

It is a cyclic number.

It is not a de Polignac number, because 115189 - 2⁷ = 115061 is a prime.

It is a Duffinian number.

115189 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115183) 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, 327 + ... + 580.

It is an arithmetic number, because the mean of its divisors is an integer number (29056).

2¹¹⁵¹⁸⁹ is an apocalyptic number.

It is an amenable number.

115189 is a deficient number, since it is larger than the sum of its proper divisors (1035).

115189 is an equidigital number, since it uses as much as digits as its factorization.

115189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034.

The product of its digits is 360, while the sum is 25.

The square root of 115189 is about 339.3950500523. The cubic root of 115189 is about 48.6560672064.

The spelling of 115189 in words is "one hundred fifteen thousand, one hundred eighty-nine".