1244794894813 has 8 divisors (see below), whose sum is σ = 1276516677240. Its totient is φ = 1213137918720.

The previous prime is 1244794894793. The next prime is 1244794894859. The reversal of 1244794894813 is 3184984974421.

It can be written as a sum of positive squares in 4 ways, for example, as 10824945849 + 1233969948964 = 104043^2 + 1110842^2 .

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 1244794894813 - 2²⁹ = 1244258023901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244794898813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16162678 + ... + 16239511.

It is an arithmetic number, because the mean of its divisors is an integer number (159564584655).

Almost surely, 2^{1244794894813} is an apocalyptic number.

It is an amenable number.

1244794894813 is a deficient number, since it is larger than the sum of its proper divisors (31721782427).

1244794894813 is an equidigital number, since it uses as much as digits as its factorization.

1244794894813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32403167.

The product of its digits is 55738368, while the sum is 64.

The spelling of 1244794894813 in words is "one trillion, two hundred forty-four billion, seven hundred ninety-four million, eight hundred ninety-four thousand, eight hundred thirteen".