1319218 has 4 divisors (see below), whose sum is σ = 1978830. Its totient is φ = 659608.

The previous prime is 1319209. The next prime is 1319261. The reversal of 1319218 is 8129131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8129131 = 19 ⋅427849.

It can be written as a sum of positive squares in only one way, i.e., 1306449 + 12769 = 1143^2 + 113^2 .

It is a super-2 number, since 2×1319218² = 3480672263048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1319192 and 1319201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329803 + ... + 329806.

2^1319218 is an apocalyptic number.

1319218 is a deficient number, since it is larger than the sum of its proper divisors (659612).

1319218 is an equidigital number, since it uses as much as digits as its factorization.

1319218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659611.

The product of its digits is 432, while the sum is 25.

The square root of 1319218 is about 1148.5721570716. The cubic root of 1319218 is about 109.6744645537.

The spelling of 1319218 in words is "one million, three hundred nineteen thousand, two hundred eighteen".