118199990 has 32 divisors (see below), whose sum is σ = 223762176. Its totient is φ = 44867680.

The previous prime is 118199989. The next prime is 118200041. The reversal of 118199990 is 99991811.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28169 + ... + 32091.

It is an arithmetic number, because the mean of its divisors is an integer number (6992568).

Almost surely, 2^118199990 is an apocalyptic number.

118199990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

118199990 is a deficient number, since it is larger than the sum of its proper divisors (105562186).

118199990 is a wasteful number, since it uses less digits than its factorization.

118199990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4084.

The product of its (nonzero) digits is 52488, while the sum is 47.

The square root of 118199990 is about 10871.9818800438. The cubic root of 118199990 is about 490.7637540936.

The spelling of 118199990 in words is "one hundred eighteen million, one hundred ninety-nine thousand, nine hundred ninety".