1126556869 has 2 divisors, whose sum is σ = 1126556870. Its totient is φ = 1126556868.

The previous prime is 1126556831. The next prime is 1126556897. The reversal of 1126556869 is 9686556211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 616926244 + 509630625 = 24838^2 + 22575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1126556869 is a prime.

It is a super-2 number, since 2×1126556869² = 2538260758182166322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1126506869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563278434 + 563278435.

It is an arithmetic number, because the mean of its divisors is an integer number (563278435).

Almost surely, 2^1126556869 is an apocalyptic number.

It is an amenable number.

1126556869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1126556869 is an equidigital number, since it uses as much as digits as its factorization.

1126556869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600, while the sum is 49.

The square root of 1126556869 is about 33564.2200713796. The cubic root of 1126556869 is about 1040.5214560155.

The spelling of 1126556869 in words is "one billion, one hundred twenty-six million, five hundred fifty-six thousand, eight hundred sixty-nine".