1313197648 has 30 divisors (see below), whose sum is σ = 2959721466. Its totient is φ = 562798656.

The previous prime is 1313197631. The next prime is 1313197649. The reversal of 1313197648 is 8467913131.

It can be written as a sum of positive squares in only one way, i.e., 1203534864 + 109662784 = 34692^2 + 10472^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313197649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 836715 + ... + 838282.

Almost surely, 2^1313197648 is an apocalyptic number.

It is an amenable number.

1313197648 is an abundant number, since it is smaller than the sum of its proper divisors (1646523818).

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

1313197648 is a wasteful number, since it uses less digits than its factorization.

1313197648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675019 (or 1675006 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 1313197648 is about 36238.0690434797. The cubic root of 1313197648 is about 1095.0737418976.

The spelling of 1313197648 in words is "one billion, three hundred thirteen million, one hundred ninety-seven thousand, six hundred forty-eight".