168164215 has 8 divisors (see below), whose sum is σ = 201926160. Its totient is φ = 134445312.

The previous prime is 168164209. The next prime is 168164233. The reversal of 168164215 is 512461861.

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 168164215 - 2⁹ = 168163703 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1425 + ... + 18394.

It is an arithmetic number, because the mean of its divisors is an integer number (25240770).

Almost surely, 2^168164215 is an apocalyptic number.

168164215 is a deficient number, since it is larger than the sum of its proper divisors (33761945).

168164215 is a wasteful number, since it uses less digits than its factorization.

168164215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21521.

The product of its digits is 11520, while the sum is 34.

The square root of 168164215 is about 12967.8145807225. The cubic root of 168164215 is about 551.9645611481.

The spelling of 168164215 in words is "one hundred sixty-eight million, one hundred sixty-four thousand, two hundred fifteen".