118171816 has 64 divisors (see below), whose sum is σ = 259793280. Its totient is φ = 49351680.

The previous prime is 118171813. The next prime is 118171817. The reversal of 118171816 is 618171811.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (118171813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 559951 + ... + 560161.

It is an arithmetic number, because the mean of its divisors is an integer number (4059270).

Almost surely, 2^118171816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118171816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129896640).

118171816 is an abundant number, since it is smaller than the sum of its proper divisors (141621464).

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

118171816 is a wasteful number, since it uses less digits than its factorization.

118171816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434 (or 430 counting only the distinct ones).

The product of its digits is 2688, while the sum is 34.

The square root of 118171816 is about 10870.6860869036. The cubic root of 118171816 is about 490.7247583860.

The spelling of 118171816 in words is "one hundred eighteen million, one hundred seventy-one thousand, eight hundred sixteen".