4170001681 has 4 divisors (see below), whose sum is σ = 4248681012. Its totient is φ = 4091322352.

The previous prime is 4170001643. The next prime is 4170001691. The reversal of 4170001681 is 1861000714.

4170001681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 1671501456 + 2498500225 = 40884^2 + 49985^2 .

It is a cyclic number.

It is not a de Polignac number, because 4170001681 - 2¹¹ = 4169999633 is a prime.

It is a super-2 number, since 2×4170001681² = 34777828039085651522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4170001691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39339586 + ... + 39339691.

It is an arithmetic number, because the mean of its divisors is an integer number (1062170253).

Almost surely, 2^4170001681 is an apocalyptic number.

It is an amenable number.

4170001681 is a deficient number, since it is larger than the sum of its proper divisors (78679331).

4170001681 is an equidigital number, since it uses as much as digits as its factorization.

4170001681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78679330.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 4170001681 is about 64575.5501796152. The cubic root of 4170001681 is about 1609.5781826413.

The spelling of 4170001681 in words is "four billion, one hundred seventy million, one thousand, six hundred eighty-one".