1220258659 has 2 divisors, whose sum is σ = 1220258660. Its totient is φ = 1220258658.

The previous prime is 1220258617. The next prime is 1220258671. The reversal of 1220258659 is 9568520221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220258659 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220258609) 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, 610129329 + 610129330.

It is an arithmetic number, because the mean of its divisors is an integer number (610129330).

Almost surely, 2^1220258659 is an apocalyptic number.

1220258659 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220258659 is an equidigital number, since it uses as much as digits as its factorization.

1220258659 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 1220258659 is about 34932.2008897235. The cubic root of 1220258659 is about 1068.6052397940.

The spelling of 1220258659 in words is "one billion, two hundred twenty million, two hundred fifty-eight thousand, six hundred fifty-nine".