1801589 has 2 divisors, whose sum is σ = 1801590. Its totient is φ = 1801588.

The previous prime is 1801577. The next prime is 1801601. The reversal of 1801589 is 9851081.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1801577) and next prime (1801601).

It can be written as a sum of positive squares in only one way, i.e., 1800964 + 625 = 1342^2 + 25^2 .

It is an emirp because it is prime and its reverse (9851081) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1801589 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1801529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 900794 + 900795.

It is an arithmetic number, because the mean of its divisors is an integer number (900795).

2^1801589 is an apocalyptic number.

It is an amenable number.

1801589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1801589 is an equidigital number, since it uses as much as digits as its factorization.

1801589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 1801589 is about 1342.2328412016. The cubic root of 1801589 is about 121.6798242687.

The spelling of 1801589 in words is "one million, eight hundred one thousand, five hundred eighty-nine".