994776161 has 2 divisors, whose sum is σ = 994776162. Its totient is φ = 994776160.

The previous prime is 994776023. The next prime is 994776203. The reversal of 994776161 is 161677499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 606686161 + 388090000 = 24631^2 + 19700^2 .

It is a cyclic number.

It is not a de Polignac number, because 994776161 - 2²⁶ = 927667297 is a prime.

It is a super-3 number, since 3×994776161³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (994776361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497388080 + 497388081.

It is an arithmetic number, because the mean of its divisors is an integer number (497388081).

Almost surely, 2^994776161 is an apocalyptic number.

It is an amenable number.

994776161 is a deficient number, since it is larger than the sum of its proper divisors (1).

994776161 is an equidigital number, since it uses as much as digits as its factorization.

994776161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 50.

The square root of 994776161 is about 31540.0723049266. The cubic root of 994776161 is about 998.2556794483.

The spelling of 994776161 in words is "nine hundred ninety-four million, seven hundred seventy-six thousand, one hundred sixty-one".