496198871989 has 2 divisors, whose sum is σ = 496198871990. Its totient is φ = 496198871988.

The previous prime is 496198871981. The next prime is 496198872011. The reversal of 496198871989 is 989178891694.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 488554867089 + 7644004900 = 698967^2 + 87430^2 .

It is a cyclic number.

It is not a de Polignac number, because 496198871989 - 2³ = 496198871981 is a prime.

It is a super-2 number, since 2×496198871989² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (496198871981) 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, 248099435994 + 248099435995.

It is an arithmetic number, because the mean of its divisors is an integer number (248099435995).

Almost surely, 2^496198871989 is an apocalyptic number.

It is an amenable number.

496198871989 is a deficient number, since it is larger than the sum of its proper divisors (1).

496198871989 is an equidigital number, since it uses as much as digits as its factorization.

496198871989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564350976, while the sum is 79.

The spelling of 496198871989 in words is "four hundred ninety-six billion, one hundred ninety-eight million, eight hundred seventy-one thousand, nine hundred eighty-nine".