118338043987 has 8 divisors (see below), whose sum is σ = 125326743696. Its totient is φ = 111352415232.

The previous prime is 118338043961. The next prime is 118338044017. The reversal of 118338043987 is 789340833811.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118338043987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118338043487) 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, 688158 + ... + 842755.

It is an arithmetic number, because the mean of its divisors is an integer number (15665842962).

Almost surely, 2^118338043987 is an apocalyptic number.

118338043987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

118338043987 is a deficient number, since it is larger than the sum of its proper divisors (6988699709).

118338043987 is a wasteful number, since it uses less digits than its factorization.

118338043987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535477.

The product of its (nonzero) digits is 3483648, while the sum is 55.

The spelling of 118338043987 in words is "one hundred eighteen billion, three hundred thirty-eight million, forty-three thousand, nine hundred eighty-seven".