1320888293 has 4 divisors (see below), whose sum is σ = 1321090368. Its totient is φ = 1320686220.

The previous prime is 1320888281. The next prime is 1320888299. The reversal of 1320888293 is 3928880231.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3928880231 = 223 ⋅17618297.

It is a cyclic number.

It is not a de Polignac number, because 1320888293 - 2¹² = 1320884197 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 (1320888299) 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, 90893 + ... + 104418.

It is an arithmetic number, because the mean of its divisors is an integer number (330272592).

Almost surely, 2^1320888293 is an apocalyptic number.

It is an amenable number.

1320888293 is a deficient number, since it is larger than the sum of its proper divisors (202075).

1320888293 is an equidigital number, since it uses as much as digits as its factorization.

1320888293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202074.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 1320888293 is about 36344.0269232786. The cubic root of 1320888293 is about 1097.2073217380.

The spelling of 1320888293 in words is "one billion, three hundred twenty million, eight hundred eighty-eight thousand, two hundred ninety-three".