118091680 has 96 divisors (see below), whose sum is σ = 322430976. Its totient is φ = 40034304.

The previous prime is 118091651. The next prime is 118091681. The reversal of 118091680 is 86190811.

It is not an unprimeable number, because it can be changed into a prime (118091681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108097 + ... + 109183.

It is an arithmetic number, because the mean of its divisors is an integer number (3358656).

Almost surely, 2^118091680 is an apocalyptic number.

118091680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118091680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161215488).

118091680 is an abundant number, since it is smaller than the sum of its proper divisors (204339296).

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

118091680 is a wasteful number, since it uses less digits than its factorization.

118091680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206 (or 1198 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 34.

The square root of 118091680 is about 10866.9995859023. Note that the first 3 decimals coincide. The cubic root of 118091680 is about 490.6138080398.

The spelling of 118091680 in words is "one hundred eighteen million, ninety-one thousand, six hundred eighty".