989858168843 has 2 divisors, whose sum is σ = 989858168844. Its totient is φ = 989858168842.

The previous prime is 989858168837. The next prime is 989858168851. The reversal of 989858168843 is 348861858989.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 989858168843 - 2¹⁸ = 989857906699 is a prime.

It is not a weakly prime, because it can be changed into another prime (989858168443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494929084421 + 494929084422.

It is an arithmetic number, because the mean of its divisors is an integer number (494929084422).

Almost surely, 2^989858168843 is an apocalyptic number.

989858168843 is a deficient number, since it is larger than the sum of its proper divisors (1).

989858168843 is an equidigital number, since it uses as much as digits as its factorization.

989858168843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 955514880, while the sum is 77.

The spelling of 989858168843 in words is "nine hundred eighty-nine billion, eight hundred fifty-eight million, one hundred sixty-eight thousand, eight hundred forty-three".