1129904843 has 2 divisors, whose sum is σ = 1129904844. Its totient is φ = 1129904842.

The previous prime is 1129904821. The next prime is 1129904857. The reversal of 1129904843 is 3484099211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1129904843 - 2¹² = 1129900747 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1129904843.

It is not a weakly prime, because it can be changed into another prime (1129904803) 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, 564952421 + 564952422.

It is an arithmetic number, because the mean of its divisors is an integer number (564952422).

Almost surely, 2^1129904843 is an apocalyptic number.

1129904843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129904843 is an equidigital number, since it uses as much as digits as its factorization.

1129904843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 1129904843 is about 33614.0572231321. The cubic root of 1129904843 is about 1041.5511994151.

The spelling of 1129904843 in words is "one billion, one hundred twenty-nine million, nine hundred four thousand, eight hundred forty-three".