1312634345746 has 16 divisors (see below), whose sum is σ = 1991153328120. Its totient is φ = 648917153280.

The previous prime is 1312634345723. The next prime is 1312634345747. The reversal of 1312634345746 is 6475434362131.

It can be written as a sum of positive squares in 4 ways, for example, as 344891925625 + 967742420121 = 587275^2 + 983739^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1312634345746.

It is not an unprimeable number, because it can be changed into a prime (1312634345747) 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, 4845190 + ... + 5108926.

Almost surely, 2^{1312634345746} is an apocalyptic number.

1312634345746 is a deficient number, since it is larger than the sum of its proper divisors (678518982374).

1312634345746 is a wasteful number, since it uses less digits than its factorization.

1312634345746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291789.

The product of its digits is 4354560, while the sum is 49.

The spelling of 1312634345746 in words is "one trillion, three hundred twelve billion, six hundred thirty-four million, three hundred forty-five thousand, seven hundred forty-six".