1945379288953 has 2 divisors, whose sum is σ = 1945379288954. Its totient is φ = 1945379288952.

The previous prime is 1945379288927. The next prime is 1945379288987. The reversal of 1945379288953 is 3598829735491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1470951757584 + 474427531369 = 1212828^2 + 688787^2 .

It is an emirp because it is prime and its reverse (3598829735491) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1945379288953 is a prime.

It is not a weakly prime, because it can be changed into another prime (1945379280953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972689644476 + 972689644477.

It is an arithmetic number, because the mean of its divisors is an integer number (972689644477).

Almost surely, 2^{1945379288953} is an apocalyptic number.

It is an amenable number.

1945379288953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1945379288953 is an equidigital number, since it uses as much as digits as its factorization.

1945379288953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 587865600, while the sum is 73.

The spelling of 1945379288953 in words is "one trillion, nine hundred forty-five billion, three hundred seventy-nine million, two hundred eighty-eight thousand, nine hundred fifty-three".