161330068 has 12 divisors (see below), whose sum is σ = 298935252. Its totient is φ = 75920000.

The previous prime is 161330041. The next prime is 161330069. The reversal of 161330068 is 860033161.

It can be written as a sum of positive squares in 2 ways, for example, as 94711824 + 66618244 = 9732^2 + 8162^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161330069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186183 + ... + 1186318.

It is an arithmetic number, because the mean of its divisors is an integer number (24911271).

Almost surely, 2^161330068 is an apocalyptic number.

It is an amenable number.

161330068 is a deficient number, since it is larger than the sum of its proper divisors (137605184).

161330068 is a wasteful number, since it uses less digits than its factorization.

161330068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372522 (or 2372520 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 161330068 is about 12701.5773823569. The cubic root of 161330068 is about 544.3836907111.

The spelling of 161330068 in words is "one hundred sixty-one million, three hundred thirty thousand, sixty-eight".