1220853184 has 28 divisors (see below), whose sum is σ = 2488111864. Its totient is φ = 593927424.

The previous prime is 1220853173. The next prime is 1220853197. The reversal of 1220853184 is 4813580221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255414 + ... + 260149.

It is an arithmetic number, because the mean of its divisors is an integer number (88861138).

Almost surely, 2^1220853184 is an apocalyptic number.

It is an amenable number.

1220853184 is an abundant number, since it is smaller than the sum of its proper divisors (1267258680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220853184 is an equidigital number, since it uses as much as digits as its factorization.

1220853184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515612 (or 515602 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 1220853184 is about 34940.7095520397. The cubic root of 1220853184 is about 1068.7787574812.

The spelling of 1220853184 in words is "one billion, two hundred twenty million, eight hundred fifty-three thousand, one hundred eighty-four".