161668284 has 24 divisors (see below), whose sum is σ = 377591760. Its totient is φ = 53837184.

The previous prime is 161668267. The next prime is 161668291. The reversal of 161668284 is 482866161.

161668284 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161668284² = 52273268103009312, which contains 22 as substring.

It is a congruent 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, 7582 + ... + 19514.

It is an arithmetic number, because the mean of its divisors is an integer number (15732990).

Almost surely, 2^161668284 is an apocalyptic number.

It is an amenable number.

161668284 is an abundant number, since it is smaller than the sum of its proper divisors (215923476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161668284 is a wasteful number, since it uses less digits than its factorization.

161668284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13069 (or 13067 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 161668284 is about 12714.8843486679. The cubic root of 161668284 is about 544.7638446037.

The spelling of 161668284 in words is "one hundred sixty-one million, six hundred sixty-eight thousand, two hundred eighty-four".