1371193744909 has 2 divisors, whose sum is σ = 1371193744910. Its totient is φ = 1371193744908.

The previous prime is 1371193744891. The next prime is 1371193745029. The reversal of 1371193744909 is 9094473911731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1369843182409 + 1350562500 = 1170403^2 + 36750^2 .

It is a cyclic number.

It is not a de Polignac number, because 1371193744909 - 2³³ = 1362603810317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1371193742909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685596872454 + 685596872455.

It is an arithmetic number, because the mean of its divisors is an integer number (685596872455).

Almost surely, 2^{1371193744909} is an apocalyptic number.

It is an amenable number.

1371193744909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371193744909 is an equidigital number, since it uses as much as digits as its factorization.

1371193744909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5143824, while the sum is 58.

The spelling of 1371193744909 in words is "one trillion, three hundred seventy-one billion, one hundred ninety-three million, seven hundred forty-four thousand, nine hundred nine".