168643339 has 4 divisors (see below), whose sum is σ = 168931224. Its totient is φ = 168355456.

The previous prime is 168643333. The next prime is 168643351. The reversal of 168643339 is 933346861.

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

It is a cyclic number.

It is not a de Polignac number, because 168643339 - 2¹³ = 168635147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168643295 and 168643304.

It is not an unprimeable number, because it can be changed into a prime (168643333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143062 + ... + 144235.

It is an arithmetic number, because the mean of its divisors is an integer number (42232806).

Almost surely, 2^168643339 is an apocalyptic number.

168643339 is a deficient number, since it is larger than the sum of its proper divisors (287885).

168643339 is an equidigital number, since it uses as much as digits as its factorization.

168643339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287884.

The product of its digits is 279936, while the sum is 43.

The square root of 168643339 is about 12986.2750240398. The cubic root of 168643339 is about 552.4882728550.

The spelling of 168643339 in words is "one hundred sixty-eight million, six hundred forty-three thousand, three hundred thirty-nine".