202168161 has 24 divisors (see below), whose sum is σ = 319824960. Its totient is φ = 122298336.

The previous prime is 202168159. The next prime is 202168181. The reversal of 202168161 is 161861202.

It is not a de Polignac number, because 202168161 - 2¹ = 202168159 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (202168181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7741 + ... + 21546.

It is an arithmetic number, because the mean of its divisors is an integer number (13326040).

Almost surely, 2^202168161 is an apocalyptic number.

It is an amenable number.

202168161 is a deficient number, since it is larger than the sum of its proper divisors (117656799).

202168161 is a wasteful number, since it uses less digits than its factorization.

202168161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29365 (or 29362 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 202168161 is about 14218.5850561861. The cubic root of 202168161 is about 586.9092039458.

The spelling of 202168161 in words is "two hundred two million, one hundred sixty-eight thousand, one hundred sixty-one".