919879493773 has 2 divisors, whose sum is σ = 919879493774. Its totient is φ = 919879493772.

The previous prime is 919879493759. The next prime is 919879493831. The reversal of 919879493773 is 377394978919.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 774678104964 + 145201388809 = 880158^2 + 381053^2 .

It is a cyclic number.

It is not a de Polignac number, because 919879493773 - 2²¹ = 919877396621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 919879493773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (919879493723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459939746886 + 459939746887.

It is an arithmetic number, because the mean of its divisors is an integer number (459939746887).

Almost surely, 2^919879493773 is an apocalyptic number.

It is an amenable number.

919879493773 is a deficient number, since it is larger than the sum of its proper divisors (1).

919879493773 is an equidigital number, since it uses as much as digits as its factorization.

919879493773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648121824, while the sum is 76.

The spelling of 919879493773 in words is "nine hundred nineteen billion, eight hundred seventy-nine million, four hundred ninety-three thousand, seven hundred seventy-three".