1361202240389 has 2 divisors, whose sum is σ = 1361202240390. Its totient is φ = 1361202240388.

The previous prime is 1361202240341. The next prime is 1361202240443. The reversal of 1361202240389 is 9830422021631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1153439484289 + 207762756100 = 1073983^2 + 455810^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361202240389 - 2²⁰ = 1361201191813 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1361202240329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680601120194 + 680601120195.

It is an arithmetic number, because the mean of its divisors is an integer number (680601120195).

Almost surely, 2^{1361202240389} is an apocalyptic number.

It is an amenable number.

1361202240389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361202240389 is an equidigital number, since it uses as much as digits as its factorization.

1361202240389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 1361202240389 in words is "one trillion, three hundred sixty-one billion, two hundred two million, two hundred forty thousand, three hundred eighty-nine".