1312663774 has 12 divisors (see below), whose sum is σ = 2058327936. Its totient is φ = 627795212.

The previous prime is 1312663769. The next prime is 1312663829. The reversal of 1312663774 is 4773662131.

It is a congruent number.

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, 619294 + ... + 621409.

It is an arithmetic number, because the mean of its divisors is an integer number (171527328).

Almost surely, 2^1312663774 is an apocalyptic number.

1312663774 is a deficient number, since it is larger than the sum of its proper divisors (745664162).

1312663774 is a wasteful number, since it uses less digits than its factorization.

1312663774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240751 (or 1240728 counting only the distinct ones).

The product of its digits is 127008, while the sum is 40.

The square root of 1312663774 is about 36230.7020909063. The cubic root of 1312663774 is about 1094.9253228473.

The spelling of 1312663774 in words is "one billion, three hundred twelve million, six hundred sixty-three thousand, seven hundred seventy-four".