161984068 has 6 divisors (see below), whose sum is σ = 283472126. Its totient is φ = 80992032.

The previous prime is 161984051. The next prime is 161984077. The reversal of 161984068 is 860489161.

161984068 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 141895744 + 20088324 = 11912^2 + 4482^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20248005 + ... + 20248012.

Almost surely, 2^161984068 is an apocalyptic number.

It is an amenable number.

161984068 is a deficient number, since it is larger than the sum of its proper divisors (121488058).

161984068 is a wasteful number, since it uses less digits than its factorization.

161984068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40496021 (or 40496019 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 161984068 is about 12727.2961779005. The cubic root of 161984068 is about 545.1183066679.

The spelling of 161984068 in words is "one hundred sixty-one million, nine hundred eighty-four thousand, sixty-eight".