1129527757 has 10 divisors (see below), whose sum is σ = 1170600518. Its totient is φ = 1089895632.

The previous prime is 1129527739. The next prime is 1129527797. The reversal of 1129527757 is 7577259211.

It can be written as a sum of positive squares in 5 ways, for example, as 263932516 + 865595241 = 16246^2 + 29421^2 .

It is not a de Polignac number, because 1129527757 - 2⁷ = 1129527629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129527797) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 706483 + ... + 708079.

Almost surely, 2^1129527757 is an apocalyptic number.

It is an amenable number.

1129527757 is a deficient number, since it is larger than the sum of its proper divisors (41072761).

1129527757 is an frugal number, since it uses more digits than its factorization.

1129527757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713 (or 1626 counting only the distinct ones).

The product of its digits is 308700, while the sum is 46.

The square root of 1129527757 is about 33608.4477029214. The cubic root of 1129527757 is about 1041.4353200182.

The spelling of 1129527757 in words is "one billion, one hundred twenty-nine million, five hundred twenty-seven thousand, seven hundred fifty-seven".