1143923269 has 2 divisors, whose sum is σ = 1143923270. Its totient is φ = 1143923268.

The previous prime is 1143923267. The next prime is 1143923279. The reversal of 1143923269 is 9623293411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 721620769 + 422302500 = 26863^2 + 20550^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143923269 - 2¹ = 1143923267 is a prime.

It is a super-2 number, since 2×1143923269² = 2617120890719292722, which contains 22 as substring.

Together with 1143923267, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143923267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571961634 + 571961635.

It is an arithmetic number, because the mean of its divisors is an integer number (571961635).

Almost surely, 2^1143923269 is an apocalyptic number.

It is an amenable number.

1143923269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143923269 is an equidigital number, since it uses as much as digits as its factorization.

1143923269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 40.

The square root of 1143923269 is about 33821.9347317684. The cubic root of 1143923269 is about 1045.8409228989.

The spelling of 1143923269 in words is "one billion, one hundred forty-three million, nine hundred twenty-three thousand, two hundred sixty-nine".