161329648 has 20 divisors (see below), whose sum is σ = 315345888. Its totient is φ = 79950080.

The previous prime is 161329633. The next prime is 161329661. The reversal of 161329648 is 846923161.

It is a self number, because there is not a number n which added to its sum of digits gives 161329648.

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, 42808 + ... + 46423.

Almost surely, 2^161329648 is an apocalyptic number.

It is an amenable number.

161329648 is a deficient number, since it is larger than the sum of its proper divisors (154016240).

161329648 is a wasteful number, since it uses less digits than its factorization.

161329648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89352 (or 89346 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 161329648 is about 12701.5608489666. The cubic root of 161329648 is about 544.3832183020.

The spelling of 161329648 in words is "one hundred sixty-one million, three hundred twenty-nine thousand, six hundred forty-eight".