2066157169 has 8 divisors (see below), whose sum is σ = 2223560808. Its totient is φ = 1912738560.

The previous prime is 2066157089. The next prime is 2066157199. The reversal of 2066157169 is 9617516602.

It can be written as a sum of positive squares in 4 ways, for example, as 66994225 + 1999162944 = 8185^2 + 44712^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2066157169 - 2⁹ = 2066156657 is a prime.

It is a super-2 number, since 2×2066157169² = 8538010894020189122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2066157199) 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 7 ways as a sum of consecutive naturals, for example, 995182 + ... + 997255.

It is an arithmetic number, because the mean of its divisors is an integer number (277945101).

Almost surely, 2^2066157169 is an apocalyptic number.

It is an amenable number.

2066157169 is a deficient number, since it is larger than the sum of its proper divisors (157403639).

2066157169 is a wasteful number, since it uses less digits than its factorization.

2066157169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992515.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 2066157169 is about 45455.0015839841. The cubic root of 2066157169 is about 1273.6627618103.

The spelling of 2066157169 in words is "two billion, sixty-six million, one hundred fifty-seven thousand, one hundred sixty-nine".