118163866 has 24 divisors (see below), whose sum is σ = 184373280. Its totient is φ = 56791152.

The previous prime is 118163861. The next prime is 118163891. The reversal of 118163866 is 668361811.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (118163861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 281805 + ... + 282223.

It is an arithmetic number, because the mean of its divisors is an integer number (7682220).

Almost surely, 2^118163866 is an apocalyptic number.

118163866 is a deficient number, since it is larger than the sum of its proper divisors (66209414).

118163866 is a wasteful number, since it uses less digits than its factorization.

118163866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598 (or 561 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 118163866 is about 10870.3204184605. The cubic root of 118163866 is about 490.7137536489.

The spelling of 118163866 in words is "one hundred eighteen million, one hundred sixty-three thousand, eight hundred sixty-six".