1057803661 has 2 divisors, whose sum is σ = 1057803662. Its totient is φ = 1057803660.

The previous prime is 1057803611. The next prime is 1057803697. The reversal of 1057803661 is 1663087501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1050991561 + 6812100 = 32419^2 + 2610^2 .

It is a cyclic number.

It is not a de Polignac number, because 1057803661 - 2⁷ = 1057803533 is a prime.

It is a super-2 number, since 2×1057803661² = 2237897170450005842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1057803661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1057803611) 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, 528901830 + 528901831.

It is an arithmetic number, because the mean of its divisors is an integer number (528901831).

Almost surely, 2^1057803661 is an apocalyptic number.

It is an amenable number.

1057803661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1057803661 is an equidigital number, since it uses as much as digits as its factorization.

1057803661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 1057803661 is about 32523.8936937139. The cubic root of 1057803661 is about 1018.9081167956.

The spelling of 1057803661 in words is "one billion, fifty-seven million, eight hundred three thousand, six hundred sixty-one".