983162561 has 4 divisors (see below), whose sum is σ = 1001712852. Its totient is φ = 964612272.

The previous prime is 983162549. The next prime is 983162569. The reversal of 983162561 is 165261389.

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 636048400 + 347114161 = 25220^2 + 18631^2 .

It is a cyclic number.

It is not a de Polignac number, because 983162561 - 2¹⁰ = 983161537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (983162569) 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 in 3 ways as a sum of consecutive naturals, for example, 9275066 + ... + 9275171.

It is an arithmetic number, because the mean of its divisors is an integer number (250428213).

Almost surely, 2^983162561 is an apocalyptic number.

It is an amenable number.

983162561 is a deficient number, since it is larger than the sum of its proper divisors (18550291).

983162561 is a wasteful number, since it uses less digits than its factorization.

983162561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18550290.

The product of its digits is 77760, while the sum is 41.

The square root of 983162561 is about 31355.4231513466. The cubic root of 983162561 is about 994.3557224019.

The spelling of 983162561 in words is "nine hundred eighty-three million, one hundred sixty-two thousand, five hundred sixty-one".