1310729648 has 40 divisors (see below), whose sum is σ = 2704045680. Its totient is φ = 613345280.

The previous prime is 1310729647. The next prime is 1310729659. The reversal of 1310729648 is 8469270131.

It is not an unprimeable number, because it can be changed into a prime (1310729647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35228 + ... + 62148.

It is an arithmetic number, because the mean of its divisors is an integer number (67601142).

Almost surely, 2^1310729648 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 1310729648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1352022840).

1310729648 is an abundant number, since it is smaller than the sum of its proper divisors (1393316032).

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

1310729648 is a wasteful number, since it uses less digits than its factorization.

1310729648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27125 (or 27119 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 1310729648 is about 36204.0004419401. Note that the first 3 decimals coincide. The cubic root of 1310729648 is about 1094.3872910631.

Adding to 1310729648 its reverse (8469270131), we get a palindrome (9779999779).

The spelling of 1310729648 in words is "one billion, three hundred ten million, seven hundred twenty-nine thousand, six hundred forty-eight".