161894 has 8 divisors (see below), whose sum is σ = 247008. Its totient is φ = 79560.

The previous prime is 161881. The next prime is 161911. The reversal of 161894 is 498161.

161894 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 an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent 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, 542 + ... + 785.

It is an arithmetic number, because the mean of its divisors is an integer number (30876).

2¹⁶¹⁸⁹⁴ is an apocalyptic number.

161894 is a deficient number, since it is larger than the sum of its proper divisors (85114).

161894 is a wasteful number, since it uses less digits than its factorization.

161894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390.

The product of its digits is 1728, while the sum is 29.

The square root of 161894 is about 402.3605348441. The cubic root of 161894 is about 54.5017253894.

The spelling of 161894 in words is "one hundred sixty-one thousand, eight hundred ninety-four".