168935953 has 4 divisors (see below), whose sum is σ = 178873380. Its totient is φ = 158998528.

The previous prime is 168935947. The next prime is 168935981. The reversal of 168935953 is 359539861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 359539861 = 7283 ⋅49367.

It can be written as a sum of positive squares in 2 ways, for example, as 76160529 + 92775424 = 8727^2 + 9632^2 .

It is a cyclic number.

It is not a de Polignac number, because 168935953 - 2²¹ = 166838801 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168935897 and 168935906.

It is not an unprimeable number, because it can be changed into a prime (168935903) 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, 4968688 + ... + 4968721.

It is an arithmetic number, because the mean of its divisors is an integer number (44718345).

Almost surely, 2^168935953 is an apocalyptic number.

It is an amenable number.

168935953 is a deficient number, since it is larger than the sum of its proper divisors (9937427).

168935953 is an equidigital number, since it uses as much as digits as its factorization.

168935953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9937426.

The product of its digits is 874800, while the sum is 49.

The square root of 168935953 is about 12997.5364204144. The cubic root of 168935953 is about 552.8076300500.

The spelling of 168935953 in words is "one hundred sixty-eight million, nine hundred thirty-five thousand, nine hundred fifty-three".