1789481 has 2 divisors, whose sum is σ = 1789482. Its totient is φ = 1789480.

The previous prime is 1789457. The next prime is 1789483. The reversal of 1789481 is 1849871.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1755625 + 33856 = 1325^2 + 184^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1789481 is a prime.

It is a super-2 number, since 2×1789481² = 6404484498722, which contains 22 as substring.

Together with 1789483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1789483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 894740 + 894741.

It is an arithmetic number, because the mean of its divisors is an integer number (894741).

2^1789481 is an apocalyptic number.

It is an amenable number.

1789481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1789481 is an equidigital number, since it uses as much as digits as its factorization.

1789481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 38.

The square root of 1789481 is about 1337.7148425580. The cubic root of 1789481 is about 121.4066187370.

It can be divided in two parts, 17 and 89481, that added together give a palindrome (89498).

The spelling of 1789481 in words is "one million, seven hundred eighty-nine thousand, four hundred eighty-one".