1863297938779 has 2 divisors, whose sum is σ = 1863297938780. Its totient is φ = 1863297938778.

The previous prime is 1863297938707. The next prime is 1863297938783. The reversal of 1863297938779 is 9778397923681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1863297938779 - 2⁹ = 1863297938267 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1863297938699 and 1863297938708.

It is not a weakly prime, because it can be changed into another prime (1863297939779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 931648969389 + 931648969390.

It is an arithmetic number, because the mean of its divisors is an integer number (931648969390).

Almost surely, 2^{1863297938779} is an apocalyptic number.

1863297938779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1863297938779 is an equidigital number, since it uses as much as digits as its factorization.

1863297938779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728324864, while the sum is 79.

The spelling of 1863297938779 in words is "one trillion, eight hundred sixty-three billion, two hundred ninety-seven million, nine hundred thirty-eight thousand, seven hundred seventy-nine".