161885082 has 8 divisors (see below), whose sum is σ = 323770176. Its totient is φ = 53961692.

The previous prime is 161885077. The next prime is 161885089. The reversal of 161885082 is 280588161.

161885082 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

161885082 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 161885082.

It is not an unprimeable number, because it can be changed into a prime (161885089) 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, 13490418 + ... + 13490429.

It is an arithmetic number, because the mean of its divisors is an integer number (40471272).

Almost surely, 2^161885082 is an apocalyptic number.

161885082 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

161885082 is a wasteful number, since it uses less digits than its factorization.

161885082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26980852.

The product of its (nonzero) digits is 30720, while the sum is 39.

The square root of 161885082 is about 12723.4068550841. The cubic root of 161885082 is about 545.0072462073.

The spelling of 161885082 in words is "one hundred sixty-one million, eight hundred eighty-five thousand, eighty-two".