1318216 has 16 divisors (see below), whose sum is σ = 2519100. Its totient is φ = 646464.

The previous prime is 1318211. The next prime is 1318241. The reversal of 1318216 is 6128131.

It can be written as a sum of positive squares in 2 ways, for example, as 1313316 + 4900 = 1146^2 + 70^2 .

It is not an unprimeable number, because it can be changed into a prime (1318211) 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, 1131 + ... + 1978.

2^1318216 is an apocalyptic number.

It is an amenable number.

1318216 is a deficient number, since it is larger than the sum of its proper divisors (1200884).

1318216 is a wasteful number, since it uses less digits than its factorization.

1318216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3168 (or 3164 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

The square root of 1318216 is about 1148.1358804601. The cubic root of 1318216 is about 109.6466901075.

The spelling of 1318216 in words is "one million, three hundred eighteen thousand, two hundred sixteen".