1129956523 has 2 divisors, whose sum is σ = 1129956524. Its totient is φ = 1129956522.

The previous prime is 1129956511. The next prime is 1129956533. The reversal of 1129956523 is 3256599211.

It is a strong prime.

It is an emirp because it is prime and its reverse (3256599211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1129956523 - 2⁵ = 1129956491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1129956523.

It is not a weakly prime, because it can be changed into another prime (1129956533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564978261 + 564978262.

It is an arithmetic number, because the mean of its divisors is an integer number (564978262).

Almost surely, 2^1129956523 is an apocalyptic number.

1129956523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129956523 is an equidigital number, since it uses as much as digits as its factorization.

1129956523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 43.

The square root of 1129956523 is about 33614.8259403496. The cubic root of 1129956523 is about 1041.5670787893.

The spelling of 1129956523 in words is "one billion, one hundred twenty-nine million, nine hundred fifty-six thousand, five hundred twenty-three".