161378 has 8 divisors (see below), whose sum is σ = 276672. Its totient is φ = 69156.

The previous prime is 161377. The next prime is 161387. The reversal of 161378 is 873161.

161378 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.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161377) 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, 5750 + ... + 5777.

It is an arithmetic number, because the mean of its divisors is an integer number (34584).

2¹⁶¹³⁷⁸ is an apocalyptic number.

161378 is a deficient number, since it is larger than the sum of its proper divisors (115294).

161378 is a wasteful number, since it uses less digits than its factorization.

161378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11536.

The product of its digits is 1008, while the sum is 26.

The square root of 161378 is about 401.7188071276. The cubic root of 161378 is about 54.4437598445.

The spelling of 161378 in words is "one hundred sixty-one thousand, three hundred seventy-eight".