116388161 has 4 divisors (see below), whose sum is σ = 117790512. Its totient is φ = 114985812.

The previous prime is 116388157. The next prime is 116388163. The reversal of 116388161 is 161883611.

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.

It is a cyclic number.

It is not a de Polignac number, because 116388161 - 2² = 116388157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116388163) 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, 701051 + ... + 701216.

It is an arithmetic number, because the mean of its divisors is an integer number (29447628).

Almost surely, 2^116388161 is an apocalyptic number.

It is an amenable number.

116388161 is a deficient number, since it is larger than the sum of its proper divisors (1402351).

116388161 is an equidigital number, since it uses as much as digits as its factorization.

116388161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402350.

The product of its digits is 6912, while the sum is 35.

The square root of 116388161 is about 10788.3344868427. The cubic root of 116388161 is about 488.2432734581.

The spelling of 116388161 in words is "one hundred sixteen million, three hundred eighty-eight thousand, one hundred sixty-one".