168216118 has 32 divisors (see below), whose sum is σ = 295488000. Its totient is φ = 71791272.

The previous prime is 168216107. The next prime is 168216119. The reversal of 168216118 is 811612861.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168216119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259671 + ... + 260317.

It is an arithmetic number, because the mean of its divisors is an integer number (9234000).

Almost surely, 2^168216118 is an apocalyptic number.

168216118 is a deficient number, since it is larger than the sum of its proper divisors (127271882).

168216118 is an equidigital number, since it uses as much as digits as its factorization.

168216118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049 (or 1035 counting only the distinct ones).

The product of its digits is 4608, while the sum is 34.

The square root of 168216118 is about 12969.8156501933. The cubic root of 168216118 is about 552.0213422925.

Adding to 168216118 its reverse (811612861), we get a palindrome (979828979).

The spelling of 168216118 in words is "one hundred sixty-eight million, two hundred sixteen thousand, one hundred eighteen".