4161600985 has 4 divisors (see below), whose sum is σ = 4993921188. Its totient is φ = 3329280784.

The previous prime is 4161600977. The next prime is 4161601033. The reversal of 4161600985 is 5890061614.

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 3123021456 + 1038579529 = 55884^2 + 32227^2 .

It is a cyclic number.

It is not a de Polignac number, because 4161600985 - 2³ = 4161600977 is a prime.

It is a super-3 number, since 3×4161600985³ (a number of 30 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416160094 + ... + 416160103.

It is an arithmetic number, because the mean of its divisors is an integer number (1248480297).

Almost surely, 2^4161600985 is an apocalyptic number.

It is an amenable number.

4161600985 is a deficient number, since it is larger than the sum of its proper divisors (832320203).

4161600985 is an equidigital number, since it uses as much as digits as its factorization.

4161600985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832320202.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 4161600985 is about 64510.4719018548. The cubic root of 4161600985 is about 1608.4965949749.

The spelling of 4161600985 in words is "four billion, one hundred sixty-one million, six hundred thousand, nine hundred eighty-five".