1320646353 has 16 divisors (see below), whose sum is σ = 1897047936. Its totient is φ = 812390400.

The previous prime is 1320646351. The next prime is 1320646381. The reversal of 1320646353 is 3536460231.

It is not a de Polignac number, because 1320646353 - 2¹ = 1320646351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320646351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132753 + ... + 142353.

It is an arithmetic number, because the mean of its divisors is an integer number (118565496).

Almost surely, 2^1320646353 is an apocalyptic number.

1320646353 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1320646353 is a deficient number, since it is larger than the sum of its proper divisors (576401583).

1320646353 is a wasteful number, since it uses less digits than its factorization.

1320646353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13144.

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 1320646353 is about 36340.6983009408. The cubic root of 1320646353 is about 1097.1403277941.

The spelling of 1320646353 in words is "one billion, three hundred twenty million, six hundred forty-six thousand, three hundred fifty-three".