1001218 has 8 divisors (see below), whose sum is σ = 1508220. Its totient is φ = 498480.

The previous prime is 1001197. The next prime is 1001219. The reversal of 1001218 is 8121001.

It can be written as a sum of positive squares in 2 ways, for example, as 644809 + 356409 = 803^2 + 597^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1001198 and 1001207.

It is not an unprimeable number, because it can be changed into a prime (1001219) 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, 393 + ... + 1468.

2^1001218 is an apocalyptic number.

1001218 is a deficient number, since it is larger than the sum of its proper divisors (507002).

1001218 is a wasteful number, since it uses less digits than its factorization.

1001218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1001218 is about 1000.6088146723. The cubic root of 1001218 is about 100.0405835275.

Adding to 1001218 its reverse (8121001), we get a palindrome (9122219).

The spelling of 1001218 in words is "one million, one thousand, two hundred eighteen".