168645158 has 16 divisors (see below), whose sum is σ = 276232464. Its totient is φ = 76582560.

The previous prime is 168645119. The next prime is 168645163. The reversal of 168645158 is 851546861.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24116 + ... + 30312.

It is an arithmetic number, because the mean of its divisors is an integer number (17264529).

Almost surely, 2^168645158 is an apocalyptic number.

168645158 is a deficient number, since it is larger than the sum of its proper divisors (107587306).

168645158 is a wasteful number, since it uses less digits than its factorization.

168645158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7447.

The product of its digits is 230400, while the sum is 44.

The square root of 168645158 is about 12986.3450593306. The cubic root of 168645158 is about 552.4902592415.

It can be divided in two parts, 16864 and 5158, that added together give a palindrome (22022).

The spelling of 168645158 in words is "one hundred sixty-eight million, six hundred forty-five thousand, one hundred fifty-eight".