1312676749 has 8 divisors (see below), whose sum is σ = 1325704320. Its totient is φ = 1299663456.

The previous prime is 1312676711. The next prime is 1312676767. The reversal of 1312676749 is 9476762131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312676749 - 2⁷ = 1312676621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312676699 and 1312676708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312676249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341452 + ... + 345274.

It is an arithmetic number, because the mean of its divisors is an integer number (165713040).

Almost surely, 2^1312676749 is an apocalyptic number.

It is an amenable number.

1312676749 is a deficient number, since it is larger than the sum of its proper divisors (13027571).

1312676749 is a wasteful number, since it uses less digits than its factorization.

1312676749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7139.

The product of its digits is 381024, while the sum is 46.

The square root of 1312676749 is about 36230.8811513052. The cubic root of 1312676749 is about 1094.9289304249.

The spelling of 1312676749 in words is "one billion, three hundred twelve million, six hundred seventy-six thousand, seven hundred forty-nine".