168230938 has 4 divisors (see below), whose sum is σ = 252346410. Its totient is φ = 84115468.

The previous prime is 168230911. The next prime is 168230939. The reversal of 168230938 is 839032861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 87104889 + 81126049 = 9333^2 + 9007^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 168230938.

It is not an unprimeable number, because it can be changed into a prime (168230939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42057733 + ... + 42057736.

Almost surely, 2^168230938 is an apocalyptic number.

168230938 is a deficient number, since it is larger than the sum of its proper divisors (84115472).

168230938 is an equidigital number, since it uses as much as digits as its factorization.

168230938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84115471.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 168230938 is about 12970.3869641580. The cubic root of 168230938 is about 552.0375530182.

The spelling of 168230938 in words is "one hundred sixty-eight million, two hundred thirty thousand, nine hundred thirty-eight".