998963165 has 4 divisors (see below), whose sum is σ = 1198755804. Its totient is φ = 799170528.

The previous prime is 998963153. The next prime is 998963179. The reversal of 998963165 is 561369899.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 154828249 + 844134916 = 12443^2 + 29054^2 .

It is a cyclic number.

It is not a de Polignac number, because 998963165 - 2⁶ = 998963101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 998963165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99896312 + ... + 99896321.

It is an arithmetic number, because the mean of its divisors is an integer number (299688951).

Almost surely, 2^998963165 is an apocalyptic number.

It is an amenable number.

998963165 is a deficient number, since it is larger than the sum of its proper divisors (199792639).

998963165 is a wasteful number, since it uses less digits than its factorization.

998963165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199792638.

The product of its digits is 3149280, while the sum is 56.

The square root of 998963165 is about 31606.3785492739. The cubic root of 998963165 is about 999.6542688171.

The spelling of 998963165 in words is "nine hundred ninety-eight million, nine hundred sixty-three thousand, one hundred sixty-five".