1320653293 has 4 divisors (see below), whose sum is σ = 1338744508. Its totient is φ = 1302562080.

The previous prime is 1320653251. The next prime is 1320653297. The reversal of 1320653293 is 3923560231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 917968804 + 402684489 = 30298^2 + 20067^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320653293 - 2²⁵ = 1287098861 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 (1320653297) 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 3 ways as a sum of consecutive naturals, for example, 9045498 + ... + 9045643.

It is an arithmetic number, because the mean of its divisors is an integer number (334686127).

Almost surely, 2^1320653293 is an apocalyptic number.

It is an amenable number.

1320653293 is a deficient number, since it is larger than the sum of its proper divisors (18091215).

1320653293 is an equidigital number, since it uses as much as digits as its factorization.

1320653293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18091214.

The product of its (nonzero) digits is 29160, while the sum is 34.

The square root of 1320653293 is about 36340.7937860471. The cubic root of 1320653293 is about 1097.1422496159.

The spelling of 1320653293 in words is "one billion, three hundred twenty million, six hundred fifty-three thousand, two hundred ninety-three".