161178 has 8 divisors (see below), whose sum is σ = 322368. Its totient is φ = 53724.

The previous prime is 161167. The next prime is 161201. The reversal of 161178 is 871161.

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

161178 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13426 + ... + 13437.

It is an arithmetic number, because the mean of its divisors is an integer number (40296).

2¹⁶¹¹⁷⁸ is an apocalyptic number.

161178 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.

161178 is a wasteful number, since it uses less digits than its factorization.

161178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26868.

The product of its digits is 336, while the sum is 24.

The square root of 161178 is about 401.4697996114. The cubic root of 161178 is about 54.4212593523.

The spelling of 161178 in words is "one hundred sixty-one thousand, one hundred seventy-eight".