980766161 has 4 divisors (see below), whose sum is σ = 1023408192. Its totient is φ = 938124132.

The previous prime is 980766139. The next prime is 980766203. The reversal of 980766161 is 161667089.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161667089 = 1171 ⋅138059.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-980766161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (980766361) 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, 21320981 + ... + 21321026.

It is an arithmetic number, because the mean of its divisors is an integer number (255852048).

Almost surely, 2^980766161 is an apocalyptic number.

It is an amenable number.

980766161 is a deficient number, since it is larger than the sum of its proper divisors (42642031).

980766161 is a wasteful number, since it uses less digits than its factorization.

980766161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42642030.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 980766161 is about 31317.1863519059. The cubic root of 980766161 is about 993.5471708930.

The spelling of 980766161 in words is "nine hundred eighty million, seven hundred sixty-six thousand, one hundred sixty-one".