1129753389 has 4 divisors (see below), whose sum is σ = 1506337856. Its totient is φ = 753168924.

The previous prime is 1129753369. The next prime is 1129753403. The reversal of 1129753389 is 9833579211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9833579211 = 3 ⋅3277859737.

It is not a de Polignac number, because 1129753389 - 2⁸ = 1129753133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129753369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188292229 + ... + 188292234.

It is an arithmetic number, because the mean of its divisors is an integer number (376584464).

Almost surely, 2^1129753389 is an apocalyptic number.

It is an amenable number.

1129753389 is a deficient number, since it is larger than the sum of its proper divisors (376584467).

1129753389 is an equidigital number, since it uses as much as digits as its factorization.

1129753389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376584466.

The product of its digits is 408240, while the sum is 48.

The square root of 1129753389 is about 33611.8043103907. The cubic root of 1129753389 is about 1041.5046603503.

The spelling of 1129753389 in words is "one billion, one hundred twenty-nine million, seven hundred fifty-three thousand, three hundred eighty-nine".