1056803785 has 4 divisors (see below), whose sum is σ = 1268164548. Its totient is φ = 845443024.

The previous prime is 1056803749. The next prime is 1056803843. The reversal of 1056803785 is 5873086501.

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 594725769 + 462078016 = 24387^2 + 21496^2 .

It is a cyclic number.

It is not a de Polignac number, because 1056803785 - 2⁹ = 1056803273 is a prime.

It is a super-2 number, since 2×1056803785² = 2233668479980652450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105680374 + ... + 105680383.

It is an arithmetic number, because the mean of its divisors is an integer number (317041137).

Almost surely, 2^1056803785 is an apocalyptic number.

It is an amenable number.

1056803785 is a deficient number, since it is larger than the sum of its proper divisors (211360763).

1056803785 is an equidigital number, since it uses as much as digits as its factorization.

1056803785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211360762.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 1056803785 is about 32508.5186528085. The cubic root of 1056803785 is about 1018.5869787699.

The spelling of 1056803785 in words is "one billion, fifty-six million, eight hundred three thousand, seven hundred eighty-five".