168493871 has 8 divisors (see below), whose sum is σ = 207377184. Its totient is φ = 133313760.

The previous prime is 168493867. The next prime is 168493873. The reversal of 168493871 is 178394861.

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

It is a cyclic number.

It is not a de Polignac number, because 168493871 - 2² = 168493867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168493873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925700 + ... + 925881.

It is an arithmetic number, because the mean of its divisors is an integer number (25922148).

Almost surely, 2^168493871 is an apocalyptic number.

168493871 is a deficient number, since it is larger than the sum of its proper divisors (38883313).

168493871 is a wasteful number, since it uses less digits than its factorization.

168493871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851601.

The product of its digits is 290304, while the sum is 47.

The square root of 168493871 is about 12980.5189033413. The cubic root of 168493871 is about 552.3250018036.

The spelling of 168493871 in words is "one hundred sixty-eight million, four hundred ninety-three thousand, eight hundred seventy-one".