2081915579 has 2 divisors, whose sum is σ = 2081915580. Its totient is φ = 2081915578.

The previous prime is 2081915573. The next prime is 2081915581. The reversal of 2081915579 is 9755191802.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2081915579 - 2²⁰ = 2080867003 is a prime.

Together with 2081915581, 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 (2081915573) 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, 1040957789 + 1040957790.

It is an arithmetic number, because the mean of its divisors is an integer number (1040957790).

Almost surely, 2^2081915579 is an apocalyptic number.

2081915579 is a deficient number, since it is larger than the sum of its proper divisors (1).

2081915579 is an equidigital number, since it uses as much as digits as its factorization.

2081915579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 47.

The square root of 2081915579 is about 45628.0130950275. The cubic root of 2081915579 is about 1276.8926046399.

The spelling of 2081915579 in words is "two billion, eighty-one million, nine hundred fifteen thousand, five hundred seventy-nine".