115537389 has 16 divisors (see below), whose sum is σ = 177940800. Its totient is φ = 65903360.

The previous prime is 115537351. The next prime is 115537393. The reversal of 115537389 is 983735511.

It is a cyclic number.

It is not a de Polignac number, because 115537389 - 2¹¹ = 115535341 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 115537389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115537339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102414 + ... + 103535.

It is an arithmetic number, because the mean of its divisors is an integer number (11121300).

Almost surely, 2^115537389 is an apocalyptic number.

It is an amenable number.

115537389 is a deficient number, since it is larger than the sum of its proper divisors (62403411).

115537389 is a wasteful number, since it uses less digits than its factorization.

115537389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205980.

The product of its digits is 113400, while the sum is 42.

The square root of 115537389 is about 10748.8319830575. The cubic root of 115537389 is about 487.0507124210.

The spelling of 115537389 in words is "one hundred fifteen million, five hundred thirty-seven thousand, three hundred eighty-nine".