18966952793 has 2 divisors, whose sum is σ = 18966952794. Its totient is φ = 18966952792.

The previous prime is 18966952777. The next prime is 18966952801. The reversal of 18966952793 is 39725966981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14915248384 + 4051704409 = 122128^2 + 63653^2 .

It is an emirp because it is prime and its reverse (39725966981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18966952793 - 2⁴ = 18966952777 is a prime.

It is not a weakly prime, because it can be changed into another prime (18966952393) 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, 9483476396 + 9483476397.

It is an arithmetic number, because the mean of its divisors is an integer number (9483476397).

Almost surely, 2^18966952793 is an apocalyptic number.

It is an amenable number.

18966952793 is a deficient number, since it is larger than the sum of its proper divisors (1).

18966952793 is an equidigital number, since it uses as much as digits as its factorization.

18966952793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44089920, while the sum is 65.

The spelling of 18966952793 in words is "eighteen billion, nine hundred sixty-six million, nine hundred fifty-two thousand, seven hundred ninety-three".