1129654805 has 6 divisors (see below), whose sum is σ = 1355675958. Its totient is φ = 903663720.

The previous prime is 1129654783. The next prime is 1129654819. The reversal of 1129654805 is 5084569211.

It can be written as a sum of positive squares in only one way, i.e., 903723844 + 225930961 = 30062^2 + 15031^2 .

It is not a de Polignac number, because 1129654805 - 2⁸ = 1129654549 is a prime.

It is a super-2 number, since 2×1129654805² = 2552239956919176050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 67640 + ... + 82670.

It is an arithmetic number, because the mean of its divisors is an integer number (225945993).

Almost surely, 2^1129654805 is an apocalyptic number.

It is an amenable number.

1129654805 is a deficient number, since it is larger than the sum of its proper divisors (226021153).

1129654805 is an frugal number, since it uses more digits than its factorization.

1129654805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30067 (or 15036 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 1129654805 is about 33610.3377697993. The cubic root of 1129654805 is about 1041.4743650419.

The spelling of 1129654805 in words is "one billion, one hundred twenty-nine million, six hundred fifty-four thousand, eight hundred five".