1130505689 has 4 divisors (see below), whose sum is σ = 1132514256. Its totient is φ = 1128497124.

The previous prime is 1130505631. The next prime is 1130505697. The reversal of 1130505689 is 9865050311.

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: 9865050311 = 263 ⋅37509697.

It is a cyclic number.

It is not a de Polignac number, because 1130505689 - 2²⁸ = 862070233 is a prime.

It is a super-2 number, since 2×1130505689² = 2556086225722729442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1130505589) 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, 1003439 + ... + 1004564.

It is an arithmetic number, because the mean of its divisors is an integer number (283128564).

Almost surely, 2^1130505689 is an apocalyptic number.

It is an amenable number.

1130505689 is a deficient number, since it is larger than the sum of its proper divisors (2008567).

1130505689 is an equidigital number, since it uses as much as digits as its factorization.

1130505689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008566.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 1130505689 is about 33622.9934568593. The cubic root of 1130505689 is about 1041.7357875186.

The spelling of 1130505689 in words is "one billion, one hundred thirty million, five hundred five thousand, six hundred eighty-nine".