168144215 has 4 divisors (see below), whose sum is σ = 201773064. Its totient is φ = 134515368.

The previous prime is 168144209. The next prime is 168144227. The reversal of 168144215 is 512441861.

168144215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 168144215 - 2⁴ = 168144199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16814417 + ... + 16814426.

It is an arithmetic number, because the mean of its divisors is an integer number (50443266).

Almost surely, 2^168144215 is an apocalyptic number.

168144215 is a deficient number, since it is larger than the sum of its proper divisors (33628849).

168144215 is an equidigital number, since it uses as much as digits as its factorization.

168144215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33628848.

The product of its digits is 7680, while the sum is 32.

The square root of 168144215 is about 12967.0434178343. The cubic root of 168144215 is about 551.9426783140.

The spelling of 168144215 in words is "one hundred sixty-eight million, one hundred forty-four thousand, two hundred fifteen".