163946 has 4 divisors (see below), whose sum is σ = 245922. Its totient is φ = 81972.

The previous prime is 163927. The next prime is 163973. The reversal of 163946 is 649361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 156025 + 7921 = 395^2 + 89^2 .

It is a plaindrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40985 + ... + 40988.

2¹⁶³⁹⁴⁶ is an apocalyptic number.

163946 is a deficient number, since it is larger than the sum of its proper divisors (81976).

163946 is an equidigital number, since it uses as much as digits as its factorization.

163946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81975.

The product of its digits is 3888, while the sum is 29.

The square root of 163946 is about 404.9024573894. The cubic root of 163946 is about 54.7310283649.

It can be divided in two parts, 16 and 3946, that multiplied together give a palindrome (63136).

The spelling of 163946 in words is "one hundred sixty-three thousand, nine hundred forty-six".