161729016 has 32 divisors (see below), whose sum is σ = 405018960. Its totient is φ = 53816832.

The previous prime is 161728993. The next prime is 161729093. The reversal of 161729016 is 610927161.

161729016 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 9216 + ... + 20208.

Almost surely, 2^161729016 is an apocalyptic number.

It is an amenable number.

161729016 is an abundant number, since it is smaller than the sum of its proper divisors (243289944).

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

161729016 is a wasteful number, since it uses less digits than its factorization.

161729016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11615 (or 11611 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 161729016 is about 12717.2723490535. The cubic root of 161729016 is about 544.8320510468.

The spelling of 161729016 in words is "one hundred sixty-one million, seven hundred twenty-nine thousand, sixteen".