168138827 has 8 divisors (see below), whose sum is σ = 174318480. Its totient is φ = 162058240.

The previous prime is 168138791. The next prime is 168138829. The reversal of 168138827 is 728831861.

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

It is not a de Polignac number, because 168138827 - 2¹⁴ = 168122443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168138829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21302 + ... + 28107.

It is an arithmetic number, because the mean of its divisors is an integer number (21789810).

Almost surely, 2^168138827 is an apocalyptic number.

168138827 is a deficient number, since it is larger than the sum of its proper divisors (6179653).

168138827 is an equidigital number, since it uses as much as digits as its factorization.

168138827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49533.

The product of its digits is 129024, while the sum is 44.

The square root of 168138827 is about 12966.8356587103. The cubic root of 168138827 is about 551.9367827817.

The spelling of 168138827 in words is "one hundred sixty-eight million, one hundred thirty-eight thousand, eight hundred twenty-seven".