1992418706857 has 2 divisors, whose sum is σ = 1992418706858. Its totient is φ = 1992418706856.

The previous prime is 1992418706821. The next prime is 1992418706881. The reversal of 1992418706857 is 7586078142991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1942355091856 + 50063615001 = 1393684^2 + 223749^2 .

It is a cyclic number.

It is not a de Polignac number, because 1992418706857 - 2¹⁵ = 1992418674089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1992418706792 and 1992418706801.

It is not a weakly prime, because it can be changed into another prime (1992418706807) 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, 996209353428 + 996209353429.

It is an arithmetic number, because the mean of its divisors is an integer number (996209353429).

Almost surely, 2^{1992418706857} is an apocalyptic number.

It is an amenable number.

1992418706857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1992418706857 is an equidigital number, since it uses as much as digits as its factorization.

1992418706857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60963840, while the sum is 67.

It can be divided in two parts, 199241 and 8706857, that added together give a palindrome (8906098).

The spelling of 1992418706857 in words is "one trillion, nine hundred ninety-two billion, four hundred eighteen million, seven hundred six thousand, eight hundred fifty-seven".