2163946 has 8 divisors (see below), whose sum is σ = 3282660. Its totient is φ = 1069728.

The previous prime is 2163923. The next prime is 2163949. The reversal of 2163946 is 6493612.

It can be written as a sum of positive squares in 2 ways, for example, as 1755625 + 408321 = 1325^2 + 639^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2163949) 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, 5901 + ... + 6256.

2^2163946 is an apocalyptic number.

2163946 is a deficient number, since it is larger than the sum of its proper divisors (1118714).

2163946 is a wasteful number, since it uses less digits than its factorization.

2163946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12248.

The product of its digits is 7776, while the sum is 31.

The square root of 2163946 is about 1471.0356895738. The cubic root of 2163946 is about 129.3447501760.

The spelling of 2163946 in words is "two million, one hundred sixty-three thousand, nine hundred forty-six".