2641959979 has 2 divisors, whose sum is σ = 2641959980. Its totient is φ = 2641959978.

The previous prime is 2641959977. The next prime is 2641960037. The reversal of 2641959979 is 9799591462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2641959979 - 2¹ = 2641959977 is a prime.

Together with 2641959977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2641959977) 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, 1320979989 + 1320979990.

It is an arithmetic number, because the mean of its divisors is an integer number (1320979990).

Almost surely, 2^2641959979 is an apocalyptic number.

2641959979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2641959979 is an equidigital number, since it uses as much as digits as its factorization.

2641959979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11022480, while the sum is 61.

The square root of 2641959979 is about 51399.9997957198. Note that the first 3 decimals coincide. The cubic root of 2641959979 is about 1382.4265887790.

The spelling of 2641959979 in words is "two billion, six hundred forty-one million, nine hundred fifty-nine thousand, nine hundred seventy-nine".