2179013779 has 2 divisors, whose sum is σ = 2179013780. Its totient is φ = 2179013778.

The previous prime is 2179013761. The next prime is 2179013797. The reversal of 2179013779 is 9773109712.

Together with next prime (2179013797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (2179013761) and next prime (2179013797).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2179013779 is a prime.

It is not a weakly prime, because it can be changed into another prime (2179013279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1089506889 + 1089506890.

It is an arithmetic number, because the mean of its divisors is an integer number (1089506890).

Almost surely, 2^2179013779 is an apocalyptic number.

2179013779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2179013779 is an equidigital number, since it uses as much as digits as its factorization.

2179013779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 166698, while the sum is 46.

The square root of 2179013779 is about 46679.9076584348. The cubic root of 2179013779 is about 1296.4426966128.

The spelling of 2179013779 in words is "two billion, one hundred seventy-nine million, thirteen thousand, seven hundred seventy-nine".