168491027 has 4 divisors (see below), whose sum is σ = 169817856. Its totient is φ = 167164200.

The previous prime is 168490991. The next prime is 168491033. The reversal of 168491027 is 720194861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 720194861 = 2207 ⋅326323.

It is a cyclic number.

It is not a de Polignac number, because 168491027 - 2¹⁴ = 168474643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168491087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663224 + ... + 663477.

It is an arithmetic number, because the mean of its divisors is an integer number (42454464).

Almost surely, 2^168491027 is an apocalyptic number.

168491027 is a deficient number, since it is larger than the sum of its proper divisors (1326829).

168491027 is a wasteful number, since it uses less digits than its factorization.

168491027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326828.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 168491027 is about 12980.4093540997. The cubic root of 168491027 is about 552.3218942304.

The spelling of 168491027 in words is "one hundred sixty-eight million, four hundred ninety-one thousand, twenty-seven".