118391868 has 60 divisors (see below), whose sum is σ = 353720752. Its totient is φ = 33825600.

The previous prime is 118391863. The next prime is 118391921. The reversal of 118391868 is 868193811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118391863) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23833 + ... + 28368.

Almost surely, 2^118391868 is an apocalyptic number.

118391868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

118391868 is an abundant number, since it is smaller than the sum of its proper divisors (235328884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118391868 is a wasteful number, since it uses less digits than its factorization.

118391868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52224 (or 52213 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The square root of 118391868 is about 10880.8027277403. The cubic root of 118391868 is about 491.0291682695.

The spelling of 118391868 in words is "one hundred eighteen million, three hundred ninety-one thousand, eight hundred sixty-eight".