2170778179 has 2 divisors, whose sum is σ = 2170778180. Its totient is φ = 2170778178.

The previous prime is 2170778119. The next prime is 2170778191. The reversal of 2170778179 is 9718770712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2170778179 - 2²⁷ = 2036560451 is a prime.

It is not a weakly prime, because it can be changed into another prime (2170778119) 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, 1085389089 + 1085389090.

It is an arithmetic number, because the mean of its divisors is an integer number (1085389090).

Almost surely, 2^2170778179 is an apocalyptic number.

2170778179 is a deficient number, since it is larger than the sum of its proper divisors (1).

2170778179 is an equidigital number, since it uses as much as digits as its factorization.

2170778179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345744, while the sum is 49.

The square root of 2170778179 is about 46591.6106074903. The cubic root of 2170778179 is about 1294.8073294054.

The spelling of 2170778179 in words is "two billion, one hundred seventy million, seven hundred seventy-eight thousand, one hundred seventy-nine".