1056990986 has 8 divisors (see below), whose sum is σ = 1592291844. Its totient is φ = 526227040.

The previous prime is 1056990863. The next prime is 1056990989. The reversal of 1056990986 is 6890996501.

It can be written as a sum of positive squares in 2 ways, for example, as 1051769761 + 5221225 = 32431^2 + 2285^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1056990986² = 2234459888970504392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1056990989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1133645 + ... + 1134576.

Almost surely, 2^1056990986 is an apocalyptic number.

1056990986 is a deficient number, since it is larger than the sum of its proper divisors (535300858).

1056990986 is a wasteful number, since it uses less digits than its factorization.

1056990986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268456.

The product of its (nonzero) digits is 1049760, while the sum is 53.

The square root of 1056990986 is about 32511.3977860073. The cubic root of 1056990986 is about 1018.6471189920.

The spelling of 1056990986 in words is "one billion, fifty-six million, nine hundred ninety thousand, nine hundred eighty-six".