8140805641 has 2 divisors, whose sum is σ = 8140805642. Its totient is φ = 8140805640.

The previous prime is 8140805627. The next prime is 8140805653. The reversal of 8140805641 is 1465080418.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6606438400 + 1534367241 = 81280^2 + 39171^2 .

It is a cyclic number.

It is not a de Polignac number, because 8140805641 - 2⁵ = 8140805609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8140805641.

It is not a weakly prime, because it can be changed into another prime (8140805611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4070402820 + 4070402821.

It is an arithmetic number, because the mean of its divisors is an integer number (4070402821).

Almost surely, 2^8140805641 is an apocalyptic number.

It is an amenable number.

8140805641 is a deficient number, since it is larger than the sum of its proper divisors (1).

8140805641 is an equidigital number, since it uses as much as digits as its factorization.

8140805641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 8140805641 is about 90226.4132114316. The cubic root of 8140805641 is about 2011.6656276871.

The spelling of 8140805641 in words is "eight billion, one hundred forty million, eight hundred five thousand, six hundred forty-one".