161934616 has 8 divisors (see below), whose sum is σ = 303627420. Its totient is φ = 80967304.

The previous prime is 161934611. The next prime is 161934629. The reversal of 161934616 is 616439161.

161934616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-4 number, since 4×161934616⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161934611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10120906 + ... + 10120921.

Almost surely, 2^161934616 is an apocalyptic number.

It is an amenable number.

161934616 is a deficient number, since it is larger than the sum of its proper divisors (141692804).

161934616 is a wasteful number, since it uses less digits than its factorization.

161934616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20241833 (or 20241829 counting only the distinct ones).

The product of its digits is 23328, while the sum is 37.

The square root of 161934616 is about 12725.3532760391. The cubic root of 161934616 is about 545.0628280962.

The spelling of 161934616 in words is "one hundred sixty-one million, nine hundred thirty-four thousand, six hundred sixteen".