161886607 has 2 divisors, whose sum is σ = 161886608. Its totient is φ = 161886606.

The previous prime is 161886601. The next prime is 161886643. The reversal of 161886607 is 706688161.

161886607 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (706688161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161886607 - 2¹¹ = 161884559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161886601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80943303 + 80943304.

It is an arithmetic number, because the mean of its divisors is an integer number (80943304).

Almost surely, 2^161886607 is an apocalyptic number.

161886607 is a deficient number, since it is larger than the sum of its proper divisors (1).

161886607 is an equidigital number, since it uses as much as digits as its factorization.

161886607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 161886607 is about 12723.4667838604. The cubic root of 161886607 is about 545.0089575724.

The spelling of 161886607 in words is "one hundred sixty-one million, eight hundred eighty-six thousand, six hundred seven".