117380191918 has 32 divisors (see below), whose sum is σ = 194036705280. Its totient is φ = 52810500000.

The previous prime is 117380191909. The next prime is 117380191933. The reversal of 117380191918 is 819191083711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10551163 + ... + 10562281.

It is an arithmetic number, because the mean of its divisors is an integer number (6063647040).

Almost surely, 2^117380191918 is an apocalyptic number.

117380191918 is a deficient number, since it is larger than the sum of its proper divisors (76656513362).

117380191918 is a wasteful number, since it uses less digits than its factorization.

117380191918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15984.

The product of its (nonzero) digits is 108864, while the sum is 49.

The spelling of 117380191918 in words is "one hundred seventeen billion, three hundred eighty million, one hundred ninety-one thousand, nine hundred eighteen".