1220453305 has 16 divisors (see below), whose sum is σ = 1500105024. Its totient is φ = 952701120.

The previous prime is 1220453287. The next prime is 1220453309. The reversal of 1220453305 is 5033540221.

It is not a de Polignac number, because 1220453305 - 2²³ = 1212064697 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 1220453305.

It is not an unprimeable number, because it can be changed into a prime (1220453309) 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 15 ways as a sum of consecutive naturals, for example, 275367 + ... + 279763.

It is an arithmetic number, because the mean of its divisors is an integer number (93756564).

Almost surely, 2^1220453305 is an apocalyptic number.

It is an amenable number.

1220453305 is a deficient number, since it is larger than the sum of its proper divisors (279651719).

1220453305 is a wasteful number, since it uses less digits than its factorization.

1220453305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5736.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 1220453305 is about 34934.9868326868. The cubic root of 1220453305 is about 1068.6620552556.

Adding to 1220453305 its reverse (5033540221), we get a palindrome (6253993526).

The spelling of 1220453305 in words is "one billion, two hundred twenty million, four hundred fifty-three thousand, three hundred five".