2001066169 has 2 divisors, whose sum is σ = 2001066170. Its totient is φ = 2001066168.

The previous prime is 2001066167. The next prime is 2001066203. The reversal of 2001066169 is 9616601002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1982030400 + 19035769 = 44520^2 + 4363^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001066169 - 2¹ = 2001066167 is a prime.

It is a super-2 number, since 2×2001066169² = 8008531625432673122, which contains 22 as substring.

Together with 2001066167, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2001066169.

It is not a weakly prime, because it can be changed into another prime (2001066163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000533084 + 1000533085.

It is an arithmetic number, because the mean of its divisors is an integer number (1000533085).

Almost surely, 2^2001066169 is an apocalyptic number.

It is an amenable number.

2001066169 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001066169 is an equidigital number, since it uses as much as digits as its factorization.

2001066169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 2001066169 is about 44733.2780936072. The cubic root of 2001066169 is about 1260.1448915850.

The spelling of 2001066169 in words is "two billion, one million, sixty-six thousand, one hundred sixty-nine".