1299785748 has 12 divisors (see below), whose sum is σ = 3032833440. Its totient is φ = 433261912.

The previous prime is 1299785723. The next prime is 1299785759. The reversal of 1299785748 is 8475879921.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1299785691 and 1299785700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54157728 + ... + 54157751.

It is an arithmetic number, because the mean of its divisors is an integer number (252736120).

Almost surely, 2^1299785748 is an apocalyptic number.

It is an amenable number.

1299785748 is an abundant number, since it is smaller than the sum of its proper divisors (1733047692).

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

1299785748 is a wasteful number, since it uses less digits than its factorization.

1299785748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108315486 (or 108315484 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 60.

The square root of 1299785748 is about 36052.5414915509. The cubic root of 1299785748 is about 1091.3329225598.

The spelling of 1299785748 in words is "one billion, two hundred ninety-nine million, seven hundred eighty-five thousand, seven hundred forty-eight".