1318946 has 4 divisors (see below), whose sum is σ = 1978422. Its totient is φ = 659472.

The previous prime is 1318943. The next prime is 1318963. The reversal of 1318946 is 6498131.

It is a happy number.

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., 1311025 + 7921 = 1145^2 + 89^2 .

It is not an unprimeable number, because it can be changed into a prime (1318943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329735 + ... + 329738.

2^1318946 is an apocalyptic number.

1318946 is a deficient number, since it is larger than the sum of its proper divisors (659476).

1318946 is an equidigital number, since it uses as much as digits as its factorization.

1318946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659475.

The product of its digits is 5184, while the sum is 32.

The square root of 1318946 is about 1148.4537430824. The cubic root of 1318946 is about 109.6669263746. Note that the first 3 decimals are identical.

The spelling of 1318946 in words is "one million, three hundred eighteen thousand, nine hundred forty-six".