1275193740349 has 2 divisors, whose sum is σ = 1275193740350. Its totient is φ = 1275193740348.

The previous prime is 1275193740287. The next prime is 1275193740371. The reversal of 1275193740349 is 9430473915721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 970583573124 + 304610167225 = 985182^2 + 551915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1275193740349 is a prime.

It is a super-2 number, since 2×1275193740349² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1275193740349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1275193740649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637596870174 + 637596870175.

It is an arithmetic number, because the mean of its divisors is an integer number (637596870175).

Almost surely, 2^{1275193740349} is an apocalyptic number.

It is an amenable number.

1275193740349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275193740349 is an equidigital number, since it uses as much as digits as its factorization.

1275193740349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5715360, while the sum is 55.

The spelling of 1275193740349 in words is "one trillion, two hundred seventy-five billion, one hundred ninety-three million, seven hundred forty thousand, three hundred forty-nine".