168353369 has 4 divisors (see below), whose sum is σ = 168533220. Its totient is φ = 168173520.

The previous prime is 168353333. The next prime is 168353377. The reversal of 168353369 is 963353861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 963353861 = 31 ⋅31075931.

It can be written as a sum of positive squares in 2 ways, for example, as 110775625 + 57577744 = 10525^2 + 7588^2 .

It is a cyclic number.

It is not a de Polignac number, because 168353369 - 2²⁰ = 167304793 is a prime.

It is a super-2 number, since 2×168353369² = 56685713707300322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (168353309) 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, 88514 + ... + 90395.

It is an arithmetic number, because the mean of its divisors is an integer number (42133305).

Almost surely, 2^168353369 is an apocalyptic number.

It is an amenable number.

168353369 is a deficient number, since it is larger than the sum of its proper divisors (179851).

168353369 is an equidigital number, since it uses as much as digits as its factorization.

168353369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179850.

The product of its digits is 349920, while the sum is 44.

The square root of 168353369 is about 12975.1057413803. The cubic root of 168353369 is about 552.1714366776.

The spelling of 168353369 in words is "one hundred sixty-eight million, three hundred fifty-three thousand, three hundred sixty-nine".