18963207943 has 2 divisors, whose sum is σ = 18963207944. Its totient is φ = 18963207942.

The previous prime is 18963207931. The next prime is 18963207979. The reversal of 18963207943 is 34970236981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18963207943 - 2¹⁷ = 18963076871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18963207143) 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, 9481603971 + 9481603972.

It is an arithmetic number, because the mean of its divisors is an integer number (9481603972).

Almost surely, 2^18963207943 is an apocalyptic number.

18963207943 is a deficient number, since it is larger than the sum of its proper divisors (1).

18963207943 is an equidigital number, since it uses as much as digits as its factorization.

18963207943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The spelling of 18963207943 in words is "eighteen billion, nine hundred sixty-three million, two hundred seven thousand, nine hundred forty-three".