117918871 has 8 divisors (see below), whose sum is σ = 136611104. Its totient is φ = 99688320.

The previous prime is 117918869. The next prime is 117918887. The reversal of 117918871 is 178819711.

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 117918871 - 2¹ = 117918869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117918811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114870 + ... + 115891.

It is an arithmetic number, because the mean of its divisors is an integer number (17076388).

Almost surely, 2^117918871 is an apocalyptic number.

117918871 is a deficient number, since it is larger than the sum of its proper divisors (18692233).

117918871 is an equidigital number, since it uses as much as digits as its factorization.

117918871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230841.

The product of its digits is 28224, while the sum is 43.

The square root of 117918871 is about 10859.0455842123. The cubic root of 117918871 is about 490.3743786107.

The spelling of 117918871 in words is "one hundred seventeen million, nine hundred eighteen thousand, eight hundred seventy-one".