168743268 has 18 divisors (see below), whose sum is σ = 426545574. Its totient is φ = 56247744.

The previous prime is 168743251. The next prime is 168743269. The reversal of 168743268 is 862347861.

It can be written as a sum of positive squares in only one way, i.e., 165328164 + 3415104 = 12858^2 + 1848^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (168743269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2343621 + ... + 2343692.

Almost surely, 2^168743268 is an apocalyptic number.

168743268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

168743268 is an abundant number, since it is smaller than the sum of its proper divisors (257802306).

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

168743268 is a wasteful number, since it uses less digits than its factorization.

168743268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4687323 (or 4687318 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 168743268 is about 12990.1219393815. The cubic root of 168743268 is about 552.5973762835.

The spelling of 168743268 in words is "one hundred sixty-eight million, seven hundred forty-three thousand, two hundred sixty-eight".