118991193 has 8 divisors (see below), whose sum is σ = 158721888. Its totient is φ = 79293984.

The previous prime is 118991183. The next prime is 118991203. The reversal of 118991193 is 391199811.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (118991183) and next prime (118991203).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 118991193 - 2⁹ = 118990681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118991153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1630 + ... + 15512.

It is an arithmetic number, because the mean of its divisors is an integer number (19840236).

Almost surely, 2^118991193 is an apocalyptic number.

It is an amenable number.

118991193 is a deficient number, since it is larger than the sum of its proper divisors (39730695).

118991193 is a wasteful number, since it uses less digits than its factorization.

118991193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16743.

The product of its digits is 17496, while the sum is 42.

The square root of 118991193 is about 10908.3084389836. The cubic root of 118991193 is about 491.8563390131.

The spelling of 118991193 in words is "one hundred eighteen million, nine hundred ninety-one thousand, one hundred ninety-three".