1970166985 has 4 divisors (see below), whose sum is σ = 2364200388. Its totient is φ = 1576133584.

The previous prime is 1970166971. The next prime is 1970167013. The reversal of 1970166985 is 5896610791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 729648144 + 1240518841 = 27012^2 + 35221^2 .

It is a cyclic number.

It is not a de Polignac number, because 1970166985 - 2¹⁵ = 1970134217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197016694 + ... + 197016703.

It is an arithmetic number, because the mean of its divisors is an integer number (591050097).

Almost surely, 2^1970166985 is an apocalyptic number.

It is an amenable number.

1970166985 is a deficient number, since it is larger than the sum of its proper divisors (394033403).

1970166985 is an equidigital number, since it uses as much as digits as its factorization.

1970166985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394033402.

The product of its (nonzero) digits is 816480, while the sum is 52.

The square root of 1970166985 is about 44386.5631131765. The cubic root of 1970166985 is about 1253.6251002224.

The spelling of 1970166985 in words is "one billion, nine hundred seventy million, one hundred sixty-six thousand, nine hundred eighty-five".