1806269 has 2 divisors, whose sum is σ = 1806270. Its totient is φ = 1806268.

The previous prime is 1806263. The next prime is 1806281. The reversal of 1806269 is 9626081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1295044 + 511225 = 1138^2 + 715^2 .

It is a cyclic number.

It is not a de Polignac number, because 1806269 - 2²⁰ = 757693 is a prime.

It is a super-2 number, since 2×1806269² = 6525215400722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1806263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 903134 + 903135.

It is an arithmetic number, because the mean of its divisors is an integer number (903135).

2^1806269 is an apocalyptic number.

It is an amenable number.

1806269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1806269 is an equidigital number, since it uses as much as digits as its factorization.

1806269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1806269 is about 1343.9750741736. The cubic root of 1806269 is about 121.7850960020.

The spelling of 1806269 in words is "one million, eight hundred six thousand, two hundred sixty-nine".