2166027770 has 8 divisors (see below), whose sum is σ = 3898850004. Its totient is φ = 866411104.

The previous prime is 2166027769. The next prime is 2166027779. The reversal of 2166027770 is 777206612.

It can be written as a sum of positive squares in 2 ways, for example, as 2146746889 + 19280881 = 46333^2 + 4391^2 .

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

It is a super-2 number, since 2×2166027770² = 9383352600822345800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2166027779) 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, 108301379 + ... + 108301398.

Almost surely, 2^2166027770 is an apocalyptic number.

2166027770 is a deficient number, since it is larger than the sum of its proper divisors (1732822234).

2166027770 is a wasteful number, since it uses less digits than its factorization.

2166027770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216602784.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 2166027770 is about 46540.6034554775. The cubic root of 2166027770 is about 1293.8621450704.

The spelling of 2166027770 in words is "two billion, one hundred sixty-six million, twenty-seven thousand, seven hundred seventy".