1136428861 has 2 divisors, whose sum is σ = 1136428862. Its totient is φ = 1136428860.

The previous prime is 1136428849. The next prime is 1136428883. The reversal of 1136428861 is 1688246311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 890127225 + 246301636 = 29835^2 + 15694^2 .

It is a cyclic number.

It is not a de Polignac number, because 1136428861 - 2¹¹ = 1136426813 is a prime.

It is a super-2 number, since 2×1136428861² = 2582941112227514642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1136498861) 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, 568214430 + 568214431.

It is an arithmetic number, because the mean of its divisors is an integer number (568214431).

Almost surely, 2^1136428861 is an apocalyptic number.

It is an amenable number.

1136428861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1136428861 is an equidigital number, since it uses as much as digits as its factorization.

1136428861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 40.

The square root of 1136428861 is about 33710.9605469794. The cubic root of 1136428861 is about 1043.5519762685.

The spelling of 1136428861 in words is "one billion, one hundred thirty-six million, four hundred twenty-eight thousand, eight hundred sixty-one".