1818419 has 2 divisors, whose sum is σ = 1818420. Its totient is φ = 1818418.

The previous prime is 1818413. The next prime is 1818431. The reversal of 1818419 is 9148181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1818419 - 2⁸ = 1818163 is a prime.

It is a super-2 number, since 2×1818419² = 6613295319122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1818413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909209 + 909210.

It is an arithmetic number, because the mean of its divisors is an integer number (909210).

2^1818419 is an apocalyptic number.

1818419 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818419 is an equidigital number, since it uses as much as digits as its factorization.

1818419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 32.

The square root of 1818419 is about 1348.4876714305. The cubic root of 1818419 is about 122.0575514547.

The spelling of 1818419 in words is "one million, eight hundred eighteen thousand, four hundred nineteen".