168135816 has 32 divisors (see below), whose sum is σ = 433900800. Its totient is φ = 54237120.

The previous prime is 168135791. The next prime is 168135859. The reversal of 168135816 is 618531861.

It is a super-3 number, since 3×168135816³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112251 + ... + 113738.

It is an arithmetic number, because the mean of its divisors is an integer number (13559400).

Almost surely, 2^168135816 is an apocalyptic number.

It is an amenable number.

168135816 is an abundant number, since it is smaller than the sum of its proper divisors (265764984).

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

168135816 is a wasteful number, since it uses less digits than its factorization.

168135816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226029 (or 226025 counting only the distinct ones).

The product of its digits is 34560, while the sum is 39.

The square root of 168135816 is about 12966.7195543052. The cubic root of 168135816 is about 551.9334881004.

The spelling of 168135816 in words is "one hundred sixty-eight million, one hundred thirty-five thousand, eight hundred sixteen".