117818851 has 8 divisors (see below), whose sum is σ = 122006880. Its totient is φ = 113639232.

The previous prime is 117818849. The next prime is 117818893. The reversal of 117818851 is 158818711.

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 117818851 - 2¹ = 117818849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117810851) 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, 43431 + ... + 46063.

It is an arithmetic number, because the mean of its divisors is an integer number (15250860).

Almost surely, 2^117818851 is an apocalyptic number.

117818851 is a deficient number, since it is larger than the sum of its proper divisors (4188029).

117818851 is a wasteful number, since it uses less digits than its factorization.

117818851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205.

The product of its digits is 17920, while the sum is 40.

The square root of 117818851 is about 10854.4392301030. The cubic root of 117818851 is about 490.2356925267.

The spelling of 117818851 in words is "one hundred seventeen million, eight hundred eighteen thousand, eight hundred fifty-one".