118509798 has 16 divisors (see below), whose sum is σ = 258566976. Its totient is φ = 35912040.

The previous prime is 118509793. The next prime is 118509799. The reversal of 118509798 is 897905811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118509791) 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 7 ways as a sum of consecutive naturals, for example, 897736 + ... + 897867.

It is an arithmetic number, because the mean of its divisors is an integer number (16160436).

Almost surely, 2^118509798 is an apocalyptic number.

118509798 is an abundant number, since it is smaller than the sum of its proper divisors (140057178).

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

118509798 is a wasteful number, since it uses less digits than its factorization.

118509798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795619.

The product of its (nonzero) digits is 181440, while the sum is 48.

The square root of 118509798 is about 10886.2205562812. The cubic root of 118509798 is about 491.1921520239.

The spelling of 118509798 in words is "one hundred eighteen million, five hundred nine thousand, seven hundred ninety-eight".