1220916063 has 4 divisors (see below), whose sum is σ = 1627888088. Its totient is φ = 813944040.

The previous prime is 1220916049. The next prime is 1220916083. The reversal of 1220916063 is 3606190221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1220916063 - 2⁵ = 1220916031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220916063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220916083) 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 in 3 ways as a sum of consecutive naturals, for example, 203486008 + ... + 203486013.

It is an arithmetic number, because the mean of its divisors is an integer number (406972022).

Almost surely, 2^1220916063 is an apocalyptic number.

1220916063 is a deficient number, since it is larger than the sum of its proper divisors (406972025).

1220916063 is an equidigital number, since it uses as much as digits as its factorization.

1220916063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406972024.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1220916063 is about 34941.6093361482. The cubic root of 1220916063 is about 1068.7971060117.

The spelling of 1220916063 in words is "one billion, two hundred twenty million, nine hundred sixteen thousand, sixty-three".