1126169749 has 2 divisors, whose sum is σ = 1126169750. Its totient is φ = 1126169748.

The previous prime is 1126169747. The next prime is 1126169783. The reversal of 1126169749 is 9479616211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 859076100 + 267093649 = 29310^2 + 16343^2 .

It is a cyclic number.

It is not a de Polignac number, because 1126169749 - 2¹ = 1126169747 is a prime.

Together with 1126169747, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1126169699 and 1126169708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1126169741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563084874 + 563084875.

It is an arithmetic number, because the mean of its divisors is an integer number (563084875).

Almost surely, 2^1126169749 is an apocalyptic number.

It is an amenable number.

1126169749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1126169749 is an equidigital number, since it uses as much as digits as its factorization.

1126169749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 46.

The square root of 1126169749 is about 33558.4527205889. The cubic root of 1126169749 is about 1040.4022571761.

The spelling of 1126169749 in words is "one billion, one hundred twenty-six million, one hundred sixty-nine thousand, seven hundred forty-nine".