1220852773 has 16 divisors (see below), whose sum is σ = 1491156864. Its totient is φ = 975674880.

The previous prime is 1220852749. The next prime is 1220852779. The reversal of 1220852773 is 3772580221.

It is a de Polignac number, because none of the positive numbers 2^k-1220852773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220852779) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 35208 + ... + 60673.

It is an arithmetic number, because the mean of its divisors is an integer number (93197304).

Almost surely, 2^1220852773 is an apocalyptic number.

It is an amenable number.

1220852773 is a deficient number, since it is larger than the sum of its proper divisors (270304091).

1220852773 is a wasteful number, since it uses less digits than its factorization.

1220852773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96012.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 1220852773 is about 34940.7036706475. The cubic root of 1220852773 is about 1068.7786375464.

The spelling of 1220852773 in words is "one billion, two hundred twenty million, eight hundred fifty-two thousand, seven hundred seventy-three".