18887775383 has 2 divisors, whose sum is σ = 18887775384. Its totient is φ = 18887775382.

The previous prime is 18887775359. The next prime is 18887775391. The reversal of 18887775383 is 38357778881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18887775383 - 2¹⁰ = 18887774359 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18887772383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9443887691 + 9443887692.

It is an arithmetic number, because the mean of its divisors is an integer number (9443887692).

Almost surely, 2^18887775383 is an apocalyptic number.

18887775383 is a deficient number, since it is larger than the sum of its proper divisors (1).

18887775383 is an equidigital number, since it uses as much as digits as its factorization.

18887775383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63221760, while the sum is 65.

The spelling of 18887775383 in words is "eighteen billion, eight hundred eighty-seven million, seven hundred seventy-five thousand, three hundred eighty-three".