1355220179 has 2 divisors, whose sum is σ = 1355220180. Its totient is φ = 1355220178.

The previous prime is 1355220173. The next prime is 1355220203. The reversal of 1355220179 is 9710225531.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1355220179 is a prime.

It is not a weakly prime, because it can be changed into another prime (1355220173) 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, 677610089 + 677610090.

It is an arithmetic number, because the mean of its divisors is an integer number (677610090).

Almost surely, 2^1355220179 is an apocalyptic number.

1355220179 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355220179 is an equidigital number, since it uses as much as digits as its factorization.

1355220179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 1355220179 is about 36813.3152405485. The cubic root of 1355220179 is about 1106.6321584153.

The spelling of 1355220179 in words is "one billion, three hundred fifty-five million, two hundred twenty thousand, one hundred seventy-nine".