1081219 has 2 divisors, whose sum is σ = 1081220. Its totient is φ = 1081218.

The previous prime is 1081163. The next prime is 1081229. The reversal of 1081219 is 9121801.

1081219 = 422² + 423² + ... + 427².

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1081219 - 2¹⁹ = 556931 is a prime.

It is a super-2 number, since 2×1081219² = 2338069051922, which contains 22 as substring.

It is a Chen prime.

1081219 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1081219.

It is not a weakly prime, because it can be changed into another prime (1081229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540609 + 540610.

It is an arithmetic number, because the mean of its divisors is an integer number (540610).

2^1081219 is an apocalyptic number.

1081219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081219 is an equidigital number, since it uses as much as digits as its factorization.

1081219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 1081219 is about 1039.8168107893. The cubic root of 1081219 is about 102.6371434103.

The spelling of 1081219 in words is "one million, eighty-one thousand, two hundred nineteen".