4081316849 has 2 divisors, whose sum is σ = 4081316850. Its totient is φ = 4081316848.

The previous prime is 4081316809. The next prime is 4081316851. The reversal of 4081316849 is 9486131804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3935680225 + 145636624 = 62735^2 + 12068^2 .

It is a cyclic number.

It is not a de Polignac number, because 4081316849 - 2¹⁶ = 4081251313 is a prime.

Together with 4081316851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4081316809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2040658424 + 2040658425.

It is an arithmetic number, because the mean of its divisors is an integer number (2040658425).

Almost surely, 2^4081316849 is an apocalyptic number.

It is an amenable number.

4081316849 is a deficient number, since it is larger than the sum of its proper divisors (1).

4081316849 is an equidigital number, since it uses as much as digits as its factorization.

4081316849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 4081316849 is about 63885.1848944652. The cubic root of 4081316849 is about 1598.0858422936.

The spelling of 4081316849 in words is "four billion, eighty-one million, three hundred sixteen thousand, eight hundred forty-nine".