118638078193 has 16 divisors (see below), whose sum is σ = 119893125184. Its totient is φ = 117390461760.

The previous prime is 118638078191. The next prime is 118638078197. The reversal of 118638078193 is 391870836811.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 118638078193 - 2¹ = 118638078191 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118638078191) 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, 50547646 + ... + 50549992.

It is an arithmetic number, because the mean of its divisors is an integer number (7493320324).

Almost surely, 2^118638078193 is an apocalyptic number.

It is an amenable number.

118638078193 is a deficient number, since it is larger than the sum of its proper divisors (1255046991).

118638078193 is a wasteful number, since it uses less digits than its factorization.

118638078193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3712.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 118638078193 in words is "one hundred eighteen billion, six hundred thirty-eight million, seventy-eight thousand, one hundred ninety-three".