1320755473 has 4 divisors (see below), whose sum is σ = 1378179648. Its totient is φ = 1263331300.

The previous prime is 1320755453. The next prime is 1320755477. The reversal of 1320755473 is 3745570231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1320755473 - 2¹⁷ = 1320624401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320755477) 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 3 ways as a sum of consecutive naturals, for example, 28712053 + ... + 28712098.

It is an arithmetic number, because the mean of its divisors is an integer number (344544912).

Almost surely, 2^1320755473 is an apocalyptic number.

It is an amenable number.

1320755473 is a deficient number, since it is larger than the sum of its proper divisors (57424175).

1320755473 is an equidigital number, since it uses as much as digits as its factorization.

1320755473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57424174.

The product of its (nonzero) digits is 88200, while the sum is 37.

The square root of 1320755473 is about 36342.1996169742. The cubic root of 1320755473 is about 1097.1705444768.

The spelling of 1320755473 in words is "one billion, three hundred twenty million, seven hundred fifty-five thousand, four hundred seventy-three".