1945127976893 has 2 divisors, whose sum is σ = 1945127976894. Its totient is φ = 1945127976892.

The previous prime is 1945127976889. The next prime is 1945127976899. The reversal of 1945127976893 is 3986797215491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1887730358809 + 57397618084 = 1373947^2 + 239578^2 .

It is an emirp because it is prime and its reverse (3986797215491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1945127976893 - 2² = 1945127976889 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1945127976899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972563988446 + 972563988447.

It is an arithmetic number, because the mean of its divisors is an integer number (972563988447).

Almost surely, 2^{1945127976893} is an apocalyptic number.

It is an amenable number.

1945127976893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1945127976893 is an equidigital number, since it uses as much as digits as its factorization.

1945127976893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 205752960, while the sum is 71.

The spelling of 1945127976893 in words is "one trillion, nine hundred forty-five billion, one hundred twenty-seven million, nine hundred seventy-six thousand, eight hundred ninety-three".