1128783829 has 2 divisors, whose sum is σ = 1128783830. Its totient is φ = 1128783828.

The previous prime is 1128783779. The next prime is 1128783871. The reversal of 1128783829 is 9283878211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1127414929 + 1368900 = 33577^2 + 1170^2 .

It is a cyclic number.

It is not a de Polignac number, because 1128783829 - 2⁷ = 1128783701 is a prime.

It is a super-2 number, since 2×1128783829² = 2548305865223802482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128783899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564391914 + 564391915.

It is an arithmetic number, because the mean of its divisors is an integer number (564391915).

Almost surely, 2^1128783829 is an apocalyptic number.

It is an amenable number.

1128783829 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128783829 is an equidigital number, since it uses as much as digits as its factorization.

1128783829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 49.

The square root of 1128783829 is about 33597.3783054571. The cubic root of 1128783829 is about 1041.2066335779.

The spelling of 1128783829 in words is "one billion, one hundred twenty-eight million, seven hundred eighty-three thousand, eight hundred twenty-nine".