1299505312 has 96 divisors (see below), whose sum is σ = 3040571520. Its totient is φ = 534912000.

The previous prime is 1299505309. The next prime is 1299505321. The reversal of 1299505312 is 2135059921.

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 15 ways as a sum of consecutive naturals, for example, 1630098 + ... + 1630894.

It is an arithmetic number, because the mean of its divisors is an integer number (31672620).

Almost surely, 2^1299505312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1299505312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1520285760).

1299505312 is an abundant number, since it is smaller than the sum of its proper divisors (1741066208).

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

1299505312 is a wasteful number, since it uses less digits than its factorization.

1299505312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094 (or 1086 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 1299505312 is about 36048.6520136329. The cubic root of 1299505312 is about 1091.2544298664.

The spelling of 1299505312 in words is "one billion, two hundred ninety-nine million, five hundred five thousand, three hundred twelve".