1966968853 has 2 divisors, whose sum is σ = 1966968854. Its totient is φ = 1966968852.

The previous prime is 1966968827. The next prime is 1966968859. The reversal of 1966968853 is 3588696691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1943222724 + 23746129 = 44082^2 + 4873^2 .

It is an emirp because it is prime and its reverse (3588696691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1966968853 - 2⁵ = 1966968821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1966968791 and 1966968800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1966968859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983484426 + 983484427.

It is an arithmetic number, because the mean of its divisors is an integer number (983484427).

Almost surely, 2^1966968853 is an apocalyptic number.

It is an amenable number.

1966968853 is a deficient number, since it is larger than the sum of its proper divisors (1).

1966968853 is an equidigital number, since it uses as much as digits as its factorization.

1966968853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16796160, while the sum is 61.

The square root of 1966968853 is about 44350.5225786574. The cubic root of 1966968853 is about 1252.9464048089.

The spelling of 1966968853 in words is "one billion, nine hundred sixty-six million, nine hundred sixty-eight thousand, eight hundred fifty-three".