1071782489 has 2 divisors, whose sum is σ = 1071782490. Its totient is φ = 1071782488.

The previous prime is 1071782471. The next prime is 1071782519. The reversal of 1071782489 is 9842871701.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 645566464 + 426216025 = 25408^2 + 20645^2 .

It is a cyclic number.

It is not a de Polignac number, because 1071782489 - 2²⁸ = 803347033 is a prime.

It is a super-2 number, since 2×1071782489² = 2297435407454070242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1071782429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535891244 + 535891245.

It is an arithmetic number, because the mean of its divisors is an integer number (535891245).

Almost surely, 2^1071782489 is an apocalyptic number.

It is an amenable number.

1071782489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1071782489 is an equidigital number, since it uses as much as digits as its factorization.

1071782489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 47.

The square root of 1071782489 is about 32738.0892692289. The cubic root of 1071782489 is about 1023.3767649364.

The spelling of 1071782489 in words is "one billion, seventy-one million, seven hundred eighty-two thousand, four hundred eighty-nine".