1057730650369 has 4 divisors (see below), whose sum is σ = 1057928992596. Its totient is φ = 1057532308144.

The previous prime is 1057730650309. The next prime is 1057730650451. The reversal of 1057730650369 is 9630560377501.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1048627200625 + 9103449744 = 1024025^2 + 95412^2 .

It is a cyclic number.

It is not a de Polignac number, because 1057730650369 - 2⁷ = 1057730650241 is a prime.

It is a super-2 number, since 2×1057730650369² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1057730650309) 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 in 3 ways as a sum of consecutive naturals, for example, 99163114 + ... + 99173779.

It is an arithmetic number, because the mean of its divisors is an integer number (264482248149).

Almost surely, 2^{1057730650369} is an apocalyptic number.

It is an amenable number.

1057730650369 is a deficient number, since it is larger than the sum of its proper divisors (198342227).

1057730650369 is an equidigital number, since it uses as much as digits as its factorization.

1057730650369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198342226.

The product of its (nonzero) digits is 3572100, while the sum is 52.

The spelling of 1057730650369 in words is "one trillion, fifty-seven billion, seven hundred thirty million, six hundred fifty thousand, three hundred sixty-nine".