1530869 has 2 divisors, whose sum is σ = 1530870. Its totient is φ = 1530868.

The previous prime is 1530863. The next prime is 1530871. The reversal of 1530869 is 9680351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1350244 + 180625 = 1162^2 + 425^2 .

It is an emirp because it is prime and its reverse (9680351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1530869 - 2⁴ = 1530853 is a prime.

It is a super-2 number, since 2×1530869² = 4687119790322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1530871, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1530863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765434 + 765435.

It is an arithmetic number, because the mean of its divisors is an integer number (765435).

2^1530869 is an apocalyptic number.

It is an amenable number.

1530869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1530869 is an equidigital number, since it uses as much as digits as its factorization.

1530869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1530869 is about 1237.2829102513. The cubic root of 1530869 is about 115.2513469100.

The spelling of 1530869 in words is "one million, five hundred thirty thousand, eight hundred sixty-nine".