115618321 has 8 divisors (see below), whose sum is σ = 142299584. Its totient is φ = 91478160.

The previous prime is 115618259. The next prime is 115618333. The reversal of 115618321 is 123816511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115618321 - 2¹⁹ = 115094033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115618321.

It is not an unprimeable number, because it can be changed into a prime (115618351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635175 + ... + 635356.

It is an arithmetic number, because the mean of its divisors is an integer number (17787448).

Almost surely, 2^115618321 is an apocalyptic number.

It is an amenable number.

115618321 is a deficient number, since it is larger than the sum of its proper divisors (26681263).

115618321 is a wasteful number, since it uses less digits than its factorization.

115618321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270551.

The product of its digits is 1440, while the sum is 28.

The square root of 115618321 is about 10752.5960121266. The cubic root of 115618321 is about 487.1644094914.

The spelling of 115618321 in words is "one hundred fifteen million, six hundred eighteen thousand, three hundred twenty-one".