161946 has 16 divisors (see below), whose sum is σ = 360000. Its totient is φ = 53964.

The previous prime is 161923. The next prime is 161947. The reversal of 161946 is 649161.

161946 is a `hidden beast` number, since 1 + 619 + 46 = 666.

161946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (161947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1446 + ... + 1553.

It is an arithmetic number, because the mean of its divisors is an integer number (22500).

2¹⁶¹⁹⁴⁶ is an apocalyptic number.

161946 is an abundant number, since it is smaller than the sum of its proper divisors (198054).

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

161946 is a wasteful number, since it uses less digits than its factorization.

161946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3010 (or 3004 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 161946 is about 402.4251483195. The cubic root of 161946 is about 54.5075600432.

The spelling of 161946 in words is "one hundred sixty-one thousand, nine hundred forty-six".