4085681101 has 2 divisors, whose sum is σ = 4085681102. Its totient is φ = 4085681100.

The previous prime is 4085681087. The next prime is 4085681129. The reversal of 4085681101 is 1011865804.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2199516201 + 1886164900 = 46899^2 + 43430^2 .

It is a cyclic number.

It is not a de Polignac number, because 4085681101 - 2⁵ = 4085681069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4085681801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2042840550 + 2042840551.

It is an arithmetic number, because the mean of its divisors is an integer number (2042840551).

Almost surely, 2^4085681101 is an apocalyptic number.

It is an amenable number.

4085681101 is a deficient number, since it is larger than the sum of its proper divisors (1).

4085681101 is an equidigital number, since it uses as much as digits as its factorization.

4085681101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 4085681101 is about 63919.3327640394. The cubic root of 4085681101 is about 1598.6552634783.

The spelling of 4085681101 in words is "four billion, eighty-five million, six hundred eighty-one thousand, one hundred one".