168505385 has 8 divisors (see below), whose sum is σ = 202455936. Its totient is φ = 134638000.

The previous prime is 168505369. The next prime is 168505397. The reversal of 168505385 is 583505861.

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

It is not a de Polignac number, because 168505385 - 2⁴ = 168505369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16241 + ... + 24510.

It is an arithmetic number, because the mean of its divisors is an integer number (25306992).

Almost surely, 2^168505385 is an apocalyptic number.

It is an amenable number.

168505385 is a deficient number, since it is larger than the sum of its proper divisors (33950551).

168505385 is an equidigital number, since it uses as much as digits as its factorization.

168505385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41583.

The product of its (nonzero) digits is 144000, while the sum is 41.

The square root of 168505385 is about 12980.9624065398. The cubic root of 168505385 is about 552.3375825287.

The spelling of 168505385 in words is "one hundred sixty-eight million, five hundred five thousand, three hundred eighty-five".