1289587630449 has 16 divisors (see below), whose sum is σ = 1779865401600. Its totient is φ = 829554934656.

The previous prime is 1289587630433. The next prime is 1289587630489. The reversal of 1289587630449 is 9440367859821.

It is a happy number.

It is not a de Polignac number, because 1289587630449 - 2⁴ = 1289587630433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1289587630449.

It is not an unprimeable number, because it can be changed into a prime (1289587630489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4544164 + ... + 4819605.

It is an arithmetic number, because the mean of its divisors is an integer number (111241587600).

It is a 1-persistent number, because it is pandigital, but 2⋅1289587630449 = 2579175260898 is not.

Almost surely, 2^{1289587630449} is an apocalyptic number.

It is an amenable number.

1289587630449 is a deficient number, since it is larger than the sum of its proper divisors (490277771151).

1289587630449 is a wasteful number, since it uses less digits than its factorization.

1289587630449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9365384.

The product of its (nonzero) digits is 104509440, while the sum is 66.

The spelling of 1289587630449 in words is "one trillion, two hundred eighty-nine billion, five hundred eighty-seven million, six hundred thirty thousand, four hundred forty-nine".