118409850 has 180 divisors, whose sum is σ = 358318026. Its totient is φ = 28978560.

The previous prime is 118409849. The next prime is 118409857. The reversal of 118409850 is 58904811.

It can be written as a sum of positive squares in 9 ways, for example, as 1185921 + 117223929 = 1089^2 + 10827^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (118409857) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 684364 + ... + 684536.

Almost surely, 2^118409850 is an apocalyptic number.

118409850 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 118409850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179159013).

118409850 is an abundant number, since it is smaller than the sum of its proper divisors (239908176).

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

118409850 is a wasteful number, since it uses less digits than its factorization.

118409850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 118409850 is about 10881.6290140769. The cubic root of 118409850 is about 491.0540270701.

The spelling of 118409850 in words is "one hundred eighteen million, four hundred nine thousand, eight hundred fifty".