168732438338 has 8 divisors (see below), whose sum is σ = 253158069180. Its totient is φ = 84346415280.

The previous prime is 168732438323. The next prime is 168732438349. The reversal of 168732438338 is 833834237861.

168732438338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 146021044129 + 22711394209 = 382127^2 + 150703^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9891293 + ... + 9908336.

Almost surely, 2^168732438338 is an apocalyptic number.

168732438338 is a deficient number, since it is larger than the sum of its proper divisors (84425630842).

168732438338 is a wasteful number, since it uses less digits than its factorization.

168732438338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19803892.

The product of its digits is 13934592, while the sum is 56.

The spelling of 168732438338 in words is "one hundred sixty-eight billion, seven hundred thirty-two million, four hundred thirty-eight thousand, three hundred thirty-eight".