1129823501 has 2 divisors, whose sum is σ = 1129823502. Its totient is φ = 1129823500.

The previous prime is 1129823393. The next prime is 1129823521. The reversal of 1129823501 is 1053289211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1021122025 + 108701476 = 31955^2 + 10426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1129823501 is a prime.

It is a super-2 number, since 2×1129823501² = 2553002286823794002, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1129823521) 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, 564911750 + 564911751.

It is an arithmetic number, because the mean of its divisors is an integer number (564911751).

Almost surely, 2^1129823501 is an apocalyptic number.

It is an amenable number.

1129823501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129823501 is an equidigital number, since it uses as much as digits as its factorization.

1129823501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 1129823501 is about 33612.8472611292. The cubic root of 1129823501 is about 1041.5262050122.

The spelling of 1129823501 in words is "one billion, one hundred twenty-nine million, eight hundred twenty-three thousand, five hundred one".