989719363187 has 16 divisors (see below), whose sum is σ = 1035686995200. Its totient is φ = 944547985920.

The previous prime is 989719363163. The next prime is 989719363189. The reversal of 989719363187 is 781363917989.

It is a cyclic number.

It is not a de Polignac number, because 989719363187 - 2¹⁸ = 989719101043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 989719363187.

It is not an unprimeable number, because it can be changed into a prime (989719363189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8113487 + ... + 8234567.

It is an arithmetic number, because the mean of its divisors is an integer number (64730437200).

Almost surely, 2^989719363187 is an apocalyptic number.

989719363187 is a deficient number, since it is larger than the sum of its proper divisors (45967632013).

989719363187 is a wasteful number, since it uses less digits than its factorization.

989719363187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124366.

The product of its digits is 123451776, while the sum is 71.

The spelling of 989719363187 in words is "nine hundred eighty-nine billion, seven hundred nineteen million, three hundred sixty-three thousand, one hundred eighty-seven".