801166169 has 2 divisors, whose sum is σ = 801166170. Its totient is φ = 801166168.

The previous prime is 801166111. The next prime is 801166189. The reversal of 801166169 is 961661108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 762477769 + 38688400 = 27613^2 + 6220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-801166169 is a prime.

It is a super-2 number, since 2×801166169² = 1283734460700273122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (801166109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400583084 + 400583085.

It is an arithmetic number, because the mean of its divisors is an integer number (400583085).

Almost surely, 2^801166169 is an apocalyptic number.

It is an amenable number.

801166169 is a deficient number, since it is larger than the sum of its proper divisors (1).

801166169 is an equidigital number, since it uses as much as digits as its factorization.

801166169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 801166169 is about 28304.8788903963. The cubic root of 801166169 is about 928.7686208058.

The spelling of 801166169 in words is "eight hundred one million, one hundred sixty-six thousand, one hundred sixty-nine".