168255113 has 4 divisors (see below), whose sum is σ = 181197828. Its totient is φ = 155312400.

The previous prime is 168255107. The next prime is 168255149. The reversal of 168255113 is 311552861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311552861 = 19 ⋅16397519.

It can be written as a sum of positive squares in 2 ways, for example, as 42994249 + 125260864 = 6557^2 + 11192^2 .

It is a cyclic number.

It is not a de Polignac number, because 168255113 - 2⁶ = 168255049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 168255113.

It is not an unprimeable number, because it can be changed into a prime (168255163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6471338 + ... + 6471363.

It is an arithmetic number, because the mean of its divisors is an integer number (45299457).

Almost surely, 2^168255113 is an apocalyptic number.

168255113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

168255113 is a deficient number, since it is larger than the sum of its proper divisors (12942715).

168255113 is a wasteful number, since it uses less digits than its factorization.

168255113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12942714.

The product of its digits is 7200, while the sum is 32.

The square root of 168255113 is about 12971.3188612415. The cubic root of 168255113 is about 552.0639945848.

The spelling of 168255113 in words is "one hundred sixty-eight million, two hundred fifty-five thousand, one hundred thirteen".