1289530613 has 16 divisors (see below), whose sum is σ = 1496954880. Its totient is φ = 1087959600.

The previous prime is 1289530603. The next prime is 1289530633. The reversal of 1289530613 is 3160359821.

It is a happy number.

It is not a de Polignac number, because 1289530613 - 2¹⁸ = 1289268469 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 (1289530603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365528 + ... + 369038.

It is an arithmetic number, because the mean of its divisors is an integer number (93559680).

Almost surely, 2^1289530613 is an apocalyptic number.

It is an amenable number.

1289530613 is a deficient number, since it is larger than the sum of its proper divisors (207424267).

1289530613 is an equidigital number, since it uses as much as digits as its factorization.

1289530613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4328.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 1289530613 is about 35910.0349902364. The cubic root of 1289530613 is about 1088.4551841808.

The spelling of 1289530613 in words is "one billion, two hundred eighty-nine million, five hundred thirty thousand, six hundred thirteen".