168538227 has 128 divisors (see below), whose sum is σ = 309657600. Its totient is φ = 79833600.

The previous prime is 168538213. The next prime is 168538241. The reversal of 168538227 is 722835861.

It is an interprime number because it is at equal distance from previous prime (168538213) and next prime (168538241).

It is not a de Polignac number, because 168538227 - 2⁴ = 168538211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168538267) 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 in 127 ways as a sum of consecutive naturals, for example, 5436702 + ... + 5436732.

It is an arithmetic number, because the mean of its divisors is an integer number (2419200).

Almost surely, 2^168538227 is an apocalyptic number.

168538227 is a deficient number, since it is larger than the sum of its proper divisors (141119373).

168538227 is a wasteful number, since it uses less digits than its factorization.

168538227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129.

The product of its digits is 161280, while the sum is 42.

The square root of 168538227 is about 12982.2273512676. The cubic root of 168538227 is about 552.3734640576.

The spelling of 168538227 in words is "one hundred sixty-eight million, five hundred thirty-eight thousand, two hundred twenty-seven".