168053869 has 4 divisors (see below), whose sum is σ = 173848860. Its totient is φ = 162258880.

The previous prime is 168053867. The next prime is 168053881. The reversal of 168053869 is 968350861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 968350861 = 29 ⋅33391409.

It can be written as a sum of positive squares in 2 ways, for example, as 113145769 + 54908100 = 10637^2 + 7410^2 .

It is a cyclic number.

It is not a de Polignac number, because 168053869 - 2¹ = 168053867 is a prime.

It is a super-2 number, since 2×168053869² = 56484205771738322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168053861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2897452 + ... + 2897509.

It is an arithmetic number, because the mean of its divisors is an integer number (43462215).

Almost surely, 2^168053869 is an apocalyptic number.

It is an amenable number.

168053869 is a deficient number, since it is larger than the sum of its proper divisors (5794991).

168053869 is an equidigital number, since it uses as much as digits as its factorization.

168053869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5794990.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 168053869 is about 12963.5592720518. The cubic root of 168053869 is about 551.8438053573.

The spelling of 168053869 in words is "one hundred sixty-eight million, fifty-three thousand, eight hundred sixty-nine".