1312654636 has 24 divisors (see below), whose sum is σ = 2358319040. Its totient is φ = 638950032.

The previous prime is 1312654631. The next prime is 1312654639. The reversal of 1312654636 is 6364562131.

It is a junction number, because it is equal to n+sod(n) for n = 1312654595 and 1312654604.

It is not an unprimeable number, because it can be changed into a prime (1312654631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40375 + ... + 65233.

Almost surely, 2^1312654636 is an apocalyptic number.

It is an amenable number.

1312654636 is a deficient number, since it is larger than the sum of its proper divisors (1045664404).

1312654636 is a wasteful number, since it uses less digits than its factorization.

1312654636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25213 (or 25211 counting only the distinct ones).

The product of its digits is 77760, while the sum is 37.

The square root of 1312654636 is about 36230.5759821728. The cubic root of 1312654636 is about 1094.9227820975.

The spelling of 1312654636 in words is "one billion, three hundred twelve million, six hundred fifty-four thousand, six hundred thirty-six".