1313421650 has 12 divisors (see below), whose sum is σ = 2442964362. Its totient is φ = 525368640.

The previous prime is 1313421611. The next prime is 1313421661. The reversal of 1313421650 is 561243131.

It can be written as a sum of positive squares in 3 ways, for example, as 1224930001 + 88491649 = 34999^2 + 9407^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13134167 + ... + 13134266.

Almost surely, 2^1313421650 is an apocalyptic number.

1313421650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1313421650 is a deficient number, since it is larger than the sum of its proper divisors (1129542712).

1313421650 is a wasteful number, since it uses less digits than its factorization.

1313421650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26268445 (or 26268440 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1313421650 is about 36241.1596116901. The cubic root of 1313421650 is about 1095.1360033458.

Adding to 1313421650 its reverse (561243131), we get a palindrome (1874664781).

The spelling of 1313421650 in words is "one billion, three hundred thirteen million, four hundred twenty-one thousand, six hundred fifty".