1056509812 has 24 divisors (see below), whose sum is σ = 2005403400. Its totient is φ = 485053440.

The previous prime is 1056509809. The next prime is 1056509837. The reversal of 1056509812 is 2189056501.

It can be written as a sum of positive squares in 4 ways, for example, as 26998416 + 1029511396 = 5196^2 + 32086^2 .

It is a super-2 number, since 2×1056509812² = 2232425965704550688, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186687 + ... + 192262.

It is an arithmetic number, because the mean of its divisors is an integer number (83558475).

Almost surely, 2^1056509812 is an apocalyptic number.

It is an amenable number.

1056509812 is a deficient number, since it is larger than the sum of its proper divisors (948893588).

1056509812 is a wasteful number, since it uses less digits than its factorization.

1056509812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379011 (or 379009 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 37.

The square root of 1056509812 is about 32503.9968619245. The cubic root of 1056509812 is about 1018.4925226235.

The spelling of 1056509812 in words is "one billion, fifty-six million, five hundred nine thousand, eight hundred twelve".