1289713734 has 12 divisors (see below), whose sum is σ = 2794379796. Its totient is φ = 429904572.

The previous prime is 1289713717. The next prime is 1289713741. The reversal of 1289713734 is 4373179821.

It is a self number, because there is not a number n which added to its sum of digits gives 1289713734.

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 5 ways as a sum of consecutive naturals, for example, 35825364 + ... + 35825399.

It is an arithmetic number, because the mean of its divisors is an integer number (232864983).

Almost surely, 2^1289713734 is an apocalyptic number.

1289713734 is an abundant number, since it is smaller than the sum of its proper divisors (1504666062).

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

1289713734 is a wasteful number, since it uses less digits than its factorization.

1289713734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71650771 (or 71650768 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 1289713734 is about 35912.5846187656. The cubic root of 1289713734 is about 1088.5067041075.

The spelling of 1289713734 in words is "one billion, two hundred eighty-nine million, seven hundred thirteen thousand, seven hundred thirty-four".