1240593889813 has 2 divisors, whose sum is σ = 1240593889814. Its totient is φ = 1240593889812.

The previous prime is 1240593889789. The next prime is 1240593889853. The reversal of 1240593889813 is 3189883950421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1086583166449 + 154010723364 = 1042393^2 + 392442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1240593889813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240593889853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620296944906 + 620296944907.

It is an arithmetic number, because the mean of its divisors is an integer number (620296944907).

Almost surely, 2^{1240593889813} is an apocalyptic number.

It is an amenable number.

1240593889813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240593889813 is an equidigital number, since it uses as much as digits as its factorization.

1240593889813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14929920, while the sum is 61.

The spelling of 1240593889813 in words is "one trillion, two hundred forty billion, five hundred ninety-three million, eight hundred eighty-nine thousand, eight hundred thirteen".