161406318 has 32 divisors (see below), whose sum is σ = 337478400. Its totient is φ = 51366656.

The previous prime is 161406317. The next prime is 161406331. The reversal of 161406318 is 813604161.

161406318 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 not an unprimeable number, because it can be changed into a prime (161406317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127573 + ... + 128831.

It is an arithmetic number, because the mean of its divisors is an integer number (10546200).

Almost surely, 2^161406318 is an apocalyptic number.

161406318 is an abundant number, since it is smaller than the sum of its proper divisors (176072082).

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

161406318 is a wasteful number, since it uses less digits than its factorization.

161406318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 161406318 is about 12704.5786234727. The cubic root of 161406318 is about 544.4694418652.

The spelling of 161406318 in words is "one hundred sixty-one million, four hundred six thousand, three hundred eighteen".