118681239 has 8 divisors (see below), whose sum is σ = 166570240. Its totient is φ = 74956536.

The previous prime is 118681231. The next prime is 118681243. The reversal of 118681239 is 932186811.

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

It is not a de Polignac number, because 118681239 - 2³ = 118681231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118681197 and 118681206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118681231) 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, 1041007 + ... + 1041120.

It is an arithmetic number, because the mean of its divisors is an integer number (20821280).

Almost surely, 2^118681239 is an apocalyptic number.

118681239 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

118681239 is a deficient number, since it is larger than the sum of its proper divisors (47889001).

118681239 is a wasteful number, since it uses less digits than its factorization.

118681239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082149.

The product of its digits is 20736, while the sum is 39.

The square root of 118681239 is about 10894.0919309505. The cubic root of 118681239 is about 491.4288972842.

The spelling of 118681239 in words is "one hundred eighteen million, six hundred eighty-one thousand, two hundred thirty-nine".