117191850 has 48 divisors (see below), whose sum is σ = 294168672. Its totient is φ = 30871360.

The previous prime is 117191843. The next prime is 117191861. The reversal of 117191850 is 58191711.

It is a zygodrome in base 5.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7744 + ... + 17156.

It is an arithmetic number, because the mean of its divisors is an integer number (6128514).

Almost surely, 2^117191850 is an apocalyptic number.

117191850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 117191850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147084336).

117191850 is an abundant number, since it is smaller than the sum of its proper divisors (176976822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117191850 is a wasteful number, since it uses less digits than its factorization.

117191850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9511 (or 9506 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 33.

The square root of 117191850 is about 10825.5184633347. The cubic root of 117191850 is about 489.3645100665.

The spelling of 117191850 in words is "one hundred seventeen million, one hundred ninety-one thousand, eight hundred fifty".