168293894 has 4 divisors (see below), whose sum is σ = 252440844. Its totient is φ = 84146946.

The previous prime is 168293893. The next prime is 168293899. The reversal of 168293894 is 498392861.

It is a happy number.

168293894 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 498392861 = 197 ⋅2529913.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168293893) 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 as a sum of consecutive naturals, namely, 42073472 + ... + 42073475.

It is an arithmetic number, because the mean of its divisors is an integer number (63110211).

Almost surely, 2^168293894 is an apocalyptic number.

168293894 is a deficient number, since it is larger than the sum of its proper divisors (84146950).

168293894 is an equidigital number, since it uses as much as digits as its factorization.

168293894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84146949.

The product of its digits is 746496, while the sum is 50.

The square root of 168293894 is about 12972.8136500915. The cubic root of 168293894 is about 552.1064062709.

The spelling of 168293894 in words is "one hundred sixty-eight million, two hundred ninety-three thousand, eight hundred ninety-four".