1129161613 has 2 divisors, whose sum is σ = 1129161614. Its totient is φ = 1129161612.

The previous prime is 1129161599. The next prime is 1129161637. The reversal of 1129161613 is 3161619211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1129161609 + 4 = 33603^2 + 2^2 .

It is an emirp because it is prime and its reverse (3161619211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1129161613 - 2⁹ = 1129161101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1129165613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564580806 + 564580807.

It is an arithmetic number, because the mean of its divisors is an integer number (564580807).

Almost surely, 2^1129161613 is an apocalyptic number.

It is an amenable number.

1129161613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129161613 is an equidigital number, since it uses as much as digits as its factorization.

1129161613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 31.

The square root of 1129161613 is about 33603.0000595185. Note that the first 4 decimals coincide. The cubic root of 1129161613 is about 1041.3227784418.

The spelling of 1129161613 in words is "one billion, one hundred twenty-nine million, one hundred sixty-one thousand, six hundred thirteen".