168243829 has 4 divisors (see below), whose sum is σ = 181185676. Its totient is φ = 155301984.

The previous prime is 168243799. The next prime is 168243833. The reversal of 168243829 is 928342861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13912900 + 154330929 = 3730^2 + 12423^2 .

It is a cyclic number.

It is not a de Polignac number, because 168243829 - 2⁷ = 168243701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168246829) 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, 6470904 + ... + 6470929.

It is an arithmetic number, because the mean of its divisors is an integer number (45296419).

Almost surely, 2^168243829 is an apocalyptic number.

It is an amenable number.

168243829 is a deficient number, since it is larger than the sum of its proper divisors (12941847).

168243829 is a wasteful number, since it uses less digits than its factorization.

168243829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12941846.

The product of its digits is 165888, while the sum is 43.

The square root of 168243829 is about 12970.8838943227. The cubic root of 168243829 is about 552.0516529502.

The spelling of 168243829 in words is "one hundred sixty-eight million, two hundred forty-three thousand, eight hundred twenty-nine".