115615189 has 2 divisors, whose sum is σ = 115615190. Its totient is φ = 115615188.

The previous prime is 115615177. The next prime is 115615217. The reversal of 115615189 is 981516511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67076100 + 48539089 = 8190^2 + 6967^2 .

It is an emirp because it is prime and its reverse (981516511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115615189 - 2²¹ = 113518037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115615109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57807594 + 57807595.

It is an arithmetic number, because the mean of its divisors is an integer number (57807595).

Almost surely, 2^115615189 is an apocalyptic number.

It is an amenable number.

115615189 is a deficient number, since it is larger than the sum of its proper divisors (1).

115615189 is an equidigital number, since it uses as much as digits as its factorization.

115615189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 37.

The square root of 115615189 is about 10752.4503718920. The cubic root of 115615189 is about 487.1600104980.

The spelling of 115615189 in words is "one hundred fifteen million, six hundred fifteen thousand, one hundred eighty-nine".