1828397 has 2 divisors, whose sum is σ = 1828398. Its totient is φ = 1828396.

The previous prime is 1828381. The next prime is 1828399. The reversal of 1828397 is 7938281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1779556 + 48841 = 1334^2 + 221^2 .

It is a cyclic number.

It is not a de Polignac number, because 1828397 - 2⁴ = 1828381 is a prime.

Together with 1828399, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1828397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1828399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 914198 + 914199.

It is an arithmetic number, because the mean of its divisors is an integer number (914199).

2^1828397 is an apocalyptic number.

It is an amenable number.

1828397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1828397 is an equidigital number, since it uses as much as digits as its factorization.

1828397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 1828397 is about 1352.1823101934. The cubic root of 1828397 is about 122.2803951114.

The spelling of 1828397 in words is "one million, eight hundred twenty-eight thousand, three hundred ninety-seven".