168238982 has 4 divisors (see below), whose sum is σ = 252358476. Its totient is φ = 84119490.

The previous prime is 168238981. The next prime is 168239003. The reversal of 168238982 is 289832861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 289832861 = 89 ⋅3256549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168238981) 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, 42059744 + ... + 42059747.

It is an arithmetic number, because the mean of its divisors is an integer number (63089619).

Almost surely, 2^168238982 is an apocalyptic number.

168238982 is a deficient number, since it is larger than the sum of its proper divisors (84119494).

168238982 is an equidigital number, since it uses as much as digits as its factorization.

168238982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84119493.

The product of its digits is 331776, while the sum is 47.

The square root of 168238982 is about 12970.6970514310. The cubic root of 168238982 is about 552.0463514778.

The spelling of 168238982 in words is "one hundred sixty-eight million, two hundred thirty-eight thousand, nine hundred eighty-two".