118191678 has 16 divisors (see below), whose sum is σ = 257872896. Its totient is φ = 35815640.

The previous prime is 118191659. The next prime is 118191679. The reversal of 118191678 is 876191811.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118191679) 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, 895326 + ... + 895457.

It is an arithmetic number, because the mean of its divisors is an integer number (16117056).

Almost surely, 2^118191678 is an apocalyptic number.

118191678 is an abundant number, since it is smaller than the sum of its proper divisors (139681218).

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

118191678 is a wasteful number, since it uses less digits than its factorization.

118191678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790799.

The product of its digits is 24192, while the sum is 42.

The square root of 118191678 is about 10871.5996063137. The cubic root of 118191678 is about 490.7522500770.

The spelling of 118191678 in words is "one hundred eighteen million, one hundred ninety-one thousand, six hundred seventy-eight".