1784980489 has 2 divisors, whose sum is σ = 1784980490. Its totient is φ = 1784980488.

The previous prime is 1784980427. The next prime is 1784980543. The reversal of 1784980489 is 9840894871.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1575454864 + 209525625 = 39692^2 + 14475^2 .

It is a cyclic number.

It is not a de Polignac number, because 1784980489 - 2⁷ = 1784980361 is a prime.

It is a super-2 number, since 2×1784980489² = 6372310692221358242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1784980409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 892490244 + 892490245.

It is an arithmetic number, because the mean of its divisors is an integer number (892490245).

Almost surely, 2^1784980489 is an apocalyptic number.

It is an amenable number.

1784980489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1784980489 is an equidigital number, since it uses as much as digits as its factorization.

1784980489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4644864, while the sum is 58.

The square root of 1784980489 is about 42249.0294444736. The cubic root of 1784980489 is about 1213.0475484107.

The spelling of 1784980489 in words is "one billion, seven hundred eighty-four million, nine hundred eighty thousand, four hundred eighty-nine".