1289130430 has 32 divisors (see below), whose sum is σ = 2791503360. Its totient is φ = 418724640.

The previous prime is 1289130419. The next prime is 1289130463. The reversal of 1289130430 is 340319821.

It is a junction number, because it is equal to n+sod(n) for n = 1289130392 and 1289130401.

It is a congruent number.

It is an unprimeable number.

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, 483306 + ... + 485965.

It is an arithmetic number, because the mean of its divisors is an integer number (87234480).

Almost surely, 2^1289130430 is an apocalyptic number.

1289130430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1289130430 is an abundant number, since it is smaller than the sum of its proper divisors (1502372930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1289130430 is a wasteful number, since it uses less digits than its factorization.

1289130430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969304.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1289130430 is about 35904.4625360135. The cubic root of 1289130430 is about 1088.3425782650.

The spelling of 1289130430 in words is "one billion, two hundred eighty-nine million, one hundred thirty thousand, four hundred thirty".