168343861 has 6 divisors (see below), whose sum is σ = 195828630. Its totient is φ = 144294696.

The previous prime is 168343829. The next prime is 168343867.

It is a happy number.

168343861 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 120318961 + 48024900 = 10969^2 + 6930^2 .

It is not a de Polignac number, because 168343861 - 2⁵ = 168343829 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 (168343867) 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, 1717746 + ... + 1717843.

It is an arithmetic number, because the mean of its divisors is an integer number (32638105).

Almost surely, 2^168343861 is an apocalyptic number.

It is an amenable number.

168343861 is a deficient number, since it is larger than the sum of its proper divisors (27484769).

168343861 is an equidigital number, since it uses as much as digits as its factorization.

168343861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435603 (or 3435596 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 168343861 is about 12974.7393422758. The cubic root of 168343861 is about 552.1610415884.

The spelling of 168343861 in words is "one hundred sixty-eight million, three hundred forty-three thousand, eight hundred sixty-one".