997884183853 has 2 divisors, whose sum is σ = 997884183854. Its totient is φ = 997884183852.

The previous prime is 997884183851. The next prime is 997884183889. The reversal of 997884183853 is 358381488799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 759899245284 + 237984938569 = 871722^2 + 487837^2 .

It is a cyclic number.

It is not a de Polignac number, because 997884183853 - 2¹ = 997884183851 is a prime.

Together with 997884183851, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997884183851) 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, 498942091926 + 498942091927.

It is an arithmetic number, because the mean of its divisors is an integer number (498942091927).

Almost surely, 2^997884183853 is an apocalyptic number.

It is an amenable number.

997884183853 is a deficient number, since it is larger than the sum of its proper divisors (1).

997884183853 is an equidigital number, since it uses as much as digits as its factorization.

997884183853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 418037760, while the sum is 73.

The spelling of 997884183853 in words is "nine hundred ninety-seven billion, eight hundred eighty-four million, one hundred eighty-three thousand, eight hundred fifty-three".