168538843 has 6 divisors (see below), whose sum is σ = 185253572. Its totient is φ = 153217020.

The previous prime is 168538841. The next prime is 168538859. The reversal of 168538843 is 348835861.

It is not a de Polignac number, because 168538843 - 2¹ = 168538841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168538793 and 168538802.

It is not an unprimeable number, because it can be changed into a prime (168538841) 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, 696321 + ... + 696562.

Almost surely, 2^168538843 is an apocalyptic number.

168538843 is a deficient number, since it is larger than the sum of its proper divisors (16714729).

168538843 is a wasteful number, since it uses less digits than its factorization.

168538843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392905 (or 1392894 counting only the distinct ones).

The product of its digits is 552960, while the sum is 46.

The square root of 168538843 is about 12982.2510759883. The cubic root of 168538843 is about 552.3741370239.

The spelling of 168538843 in words is "one hundred sixty-eight million, five hundred thirty-eight thousand, eight hundred forty-three".