1220344159 has 2 divisors, whose sum is σ = 1220344160. Its totient is φ = 1220344158.

The previous prime is 1220344117. The next prime is 1220344183. The reversal of 1220344159 is 9514430221.

It is a strong prime.

It is an emirp because it is prime and its reverse (9514430221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220344159 - 2¹⁹ = 1219819871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220344159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220344199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610172079 + 610172080.

It is an arithmetic number, because the mean of its divisors is an integer number (610172080).

Almost surely, 2^1220344159 is an apocalyptic number.

1220344159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220344159 is an equidigital number, since it uses as much as digits as its factorization.

1220344159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1220344159 is about 34933.4246675015. The cubic root of 1220344159 is about 1068.6301972387.

The spelling of 1220344159 in words is "one billion, two hundred twenty million, three hundred forty-four thousand, one hundred fifty-nine".