1126986209 has 2 divisors, whose sum is σ = 1126986210. Its totient is φ = 1126986208.

The previous prime is 1126986193. The next prime is 1126986239. The reversal of 1126986209 is 9026896211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 932997025 + 193989184 = 30545^2 + 13928^2 .

It is a cyclic number.

It is not a de Polignac number, because 1126986209 - 2⁴ = 1126986193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1126986209.

It is not a weakly prime, because it can be changed into another prime (1126986239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563493104 + 563493105.

It is an arithmetic number, because the mean of its divisors is an integer number (563493105).

Almost surely, 2^1126986209 is an apocalyptic number.

It is an amenable number.

1126986209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1126986209 is an equidigital number, since it uses as much as digits as its factorization.

1126986209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 1126986209 is about 33570.6152609689. The cubic root of 1126986209 is about 1040.6536229614.

The spelling of 1126986209 in words is "one billion, one hundred twenty-six million, nine hundred eighty-six thousand, two hundred nine".