1057243489 has 2 divisors, whose sum is σ = 1057243490. Its totient is φ = 1057243488.

The previous prime is 1057243483. The next prime is 1057243519. The reversal of 1057243489 is 9843427501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 767733264 + 289510225 = 27708^2 + 17015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1057243489 is a prime.

It is a super-2 number, since 2×1057243489² = 2235527590065786242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1057243483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528621744 + 528621745.

It is an arithmetic number, because the mean of its divisors is an integer number (528621745).

Almost surely, 2^1057243489 is an apocalyptic number.

It is an amenable number.

1057243489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1057243489 is an equidigital number, since it uses as much as digits as its factorization.

1057243489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 1057243489 is about 32515.2808537770. The cubic root of 1057243489 is about 1018.7282268974.

The spelling of 1057243489 in words is "one billion, fifty-seven million, two hundred forty-three thousand, four hundred eighty-nine".