1220083643 has 2 divisors, whose sum is σ = 1220083644. Its totient is φ = 1220083642.

The previous prime is 1220083639. The next prime is 1220083673. The reversal of 1220083643 is 3463800221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220083643 - 2² = 1220083639 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220083603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610041821 + 610041822.

It is an arithmetic number, because the mean of its divisors is an integer number (610041822).

Almost surely, 2^1220083643 is an apocalyptic number.

1220083643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220083643 is an equidigital number, since it uses as much as digits as its factorization.

1220083643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 1220083643 is about 34929.6957186861. The cubic root of 1220083643 is about 1068.5541489985.

Adding to 1220083643 its reverse (3463800221), we get a palindrome (4683883864).

The spelling of 1220083643 in words is "one billion, two hundred twenty million, eighty-three thousand, six hundred forty-three".