1308520064 has 16 divisors (see below), whose sum is σ = 2606817570. Its totient is φ = 654259968.

The previous prime is 1308520051. The next prime is 1308520067. The reversal of 1308520064 is 4600258031.

It can be written as a sum of positive squares in only one way, i.e., 900480064 + 408040000 = 30008^2 + 20200^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (1308520067) by changing a digit.

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 as a sum of consecutive naturals, namely, 5111279 + ... + 5111534.

Almost surely, 2^1308520064 is an apocalyptic number.

It is an amenable number.

1308520064 is a deficient number, since it is larger than the sum of its proper divisors (1298297506).

1308520064 is an equidigital number, since it uses as much as digits as its factorization.

1308520064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10222827 (or 10222815 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1308520064 is about 36173.4718267407. The cubic root of 1308520064 is about 1093.7719847380.

Adding to 1308520064 its reverse (4600258031), we get a palindrome (5908778095).

The spelling of 1308520064 in words is "one billion, three hundred eight million, five hundred twenty thousand, sixty-four".