1129645757 has 2 divisors, whose sum is σ = 1129645758. Its totient is φ = 1129645756.

The previous prime is 1129645747. The next prime is 1129645771. The reversal of 1129645757 is 7575469211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 700078681 + 429567076 = 26459^2 + 20726^2 .

It is an emirp because it is prime and its reverse (7575469211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1129645757 - 2¹⁸ = 1129383613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1129645717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564822878 + 564822879.

It is an arithmetic number, because the mean of its divisors is an integer number (564822879).

Almost surely, 2^1129645757 is an apocalyptic number.

It is an amenable number.

1129645757 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129645757 is an equidigital number, since it uses as much as digits as its factorization.

1129645757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 529200, while the sum is 47.

The square root of 1129645757 is about 33610.2031680857. The cubic root of 1129645757 is about 1041.4715844623.

The spelling of 1129645757 in words is "one billion, one hundred twenty-nine million, six hundred forty-five thousand, seven hundred fifty-seven".