117161843 has 4 divisors (see below), whose sum is σ = 117809328. Its totient is φ = 116514360.

The previous prime is 117161833. The next prime is 117161873. The reversal of 117161843 is 348161711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 348161711 = 757 ⋅459923.

It is a cyclic number.

It is not a de Polignac number, because 117161843 - 2¹⁰ = 117160819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117161833) 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, 323471 + ... + 323832.

It is an arithmetic number, because the mean of its divisors is an integer number (29452332).

Almost surely, 2^117161843 is an apocalyptic number.

117161843 is a deficient number, since it is larger than the sum of its proper divisors (647485).

117161843 is an equidigital number, since it uses as much as digits as its factorization.

117161843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647484.

The product of its digits is 4032, while the sum is 32.

The square root of 117161843 is about 10824.1324363664. The cubic root of 117161843 is about 489.3227392029.

The spelling of 117161843 in words is "one hundred seventeen million, one hundred sixty-one thousand, eight hundred forty-three".